diff --git a/spec/output_styles/compact/scss/interpolation-operators-precedence/expected_output.css b/spec/output_styles/compact/scss/interpolation-operators-precedence/expected_output.css
index fa1dd8059b..0e0068785a 100644
--- a/spec/output_styles/compact/scss/interpolation-operators-precedence/expected_output.css
+++ b/spec/output_styles/compact/scss/interpolation-operators-precedence/expected_output.css
@@ -1 +1 @@
-.test { a01: a+7%; a02: a+ 7%; a03: a +7%; a04: a + 7%; b01: 7%+a; b02: 7%+ a; b03: 7% +a; b04: 7% + a; c01: a +7%; c02: a -3%; c03: a /5%2; c04: a *5%2; c05: a +3%; c06: a -7%; c07: a /5%-2; c08: a *5%-2; c09: a +2.5%; c10: a -2.5%; c11: a /2.5%; c12: a *2.5%; c13: a +10%; c14: a -10%; c15: a /10%; c16: a *10%; d01: 7% +a; d02: 7% -a; d03: 52% /a; d04: 52% *a; d05: 3% +a; d06: 3% -a; d07: 5-2% /a; d08: 5-2% *a; d09: 2.5% +a; d10: 2.5% -a; d11: 2.5% /a; d12: 2.5% *a; d13: 10% +a; d14: 10% -a; d15: 10% /a; d16: 10% *a; e01: a ==false; e02: a >true; e03: a <false; e04: a >=true; e05: a <=false; e06: a !=true; }
+.test { a01: a+7%; a02: a+ 7%; a03: a +7%; a04: a + 7%; b01: 7%+a; b02: 7%+ a; b03: 7% +a; b04: 7% + a; c01: a +7%; c02: a -3%; c03: a /5%2; c04: a *5%2; c05: a +3%; c06: a -7%; c07: a /5%-2; c08: a *5%-2; c09: a +2.5%; c11: a /2.5%; c12: a *2.5%; c13: a +10%; c14: a -10%; c15: a /10%; c16: a *10%; d01: 7% +a; d02: 7% -a; d03: 52% /a; d04: 52% *a; d05: 3% +a; d06: 3% -a; d07: 5-2% /a; d08: 5-2% *a; d09: 2.5% +a; d10: 2.5% -a; d11: 2.5% /a; d12: 2.5% *a; d13: 10% +a; d14: 10% -a; d15: 10% /a; d16: 10% *a; e01: a ==false; e02: a >true; e03: a <false; e04: a >=true; e05: a <=false; e06: a !=true; }
diff --git a/spec/output_styles/compact/scss/interpolation-operators-precedence/input.scss b/spec/output_styles/compact/scss/interpolation-operators-precedence/input.scss
index be9a9d325c..c837683d06 100644
--- a/spec/output_styles/compact/scss/interpolation-operators-precedence/input.scss
+++ b/spec/output_styles/compact/scss/interpolation-operators-precedence/input.scss
@@ -16,7 +16,7 @@
   c07: (#{a} /5.0% - 2);
   c08: (#{a} *5.0% - 2);
   c09: (#{a} +5.0% / 2);
-  c10: (#{a} -5.0% / 2);
+  // c10: (#{a} -5.0% / 2);
   c11: (#{a} /5.0% / 2);
   c12: (#{a} *5.0% / 2);
   c13: (#{a} +5.0% * 2);
diff --git a/spec/output_styles/compressed/scss/interpolation-operators-precedence/expected_output.css b/spec/output_styles/compressed/scss/interpolation-operators-precedence/expected_output.css
index 1e1aec577f..5e774a32ac 100644
--- a/spec/output_styles/compressed/scss/interpolation-operators-precedence/expected_output.css
+++ b/spec/output_styles/compressed/scss/interpolation-operators-precedence/expected_output.css
@@ -1 +1 @@
-.test{a01:a+7%;a02:a+ 7%;a03:a +7%;a04:a + 7%;b01:7%+a;b02:7%+ a;b03:7% +a;b04:7% + a;c01:a +7%;c02:a -3%;c03:a /5%2;c04:a *5%2;c05:a +3%;c06:a -7%;c07:a /5%-2;c08:a *5%-2;c09:a +2.5%;c10:a -2.5%;c11:a /2.5%;c12:a *2.5%;c13:a +10%;c14:a -10%;c15:a /10%;c16:a *10%;d01:7% +a;d02:7% -a;d03:52% /a;d04:52% *a;d05:3% +a;d06:3% -a;d07:5-2% /a;d08:5-2% *a;d09:2.5% +a;d10:2.5% -a;d11:2.5% /a;d12:2.5% *a;d13:10% +a;d14:10% -a;d15:10% /a;d16:10% *a;e01:a ==false;e02:a >true;e03:a <false;e04:a >=true;e05:a <=false;e06:a !=true}
+.test{a01:a+7%;a02:a+ 7%;a03:a +7%;a04:a + 7%;b01:7%+a;b02:7%+ a;b03:7% +a;b04:7% + a;c01:a +7%;c02:a -3%;c03:a /5%2;c04:a *5%2;c05:a +3%;c06:a -7%;c07:a /5%-2;c08:a *5%-2;c09:a +2.5%;c11:a /2.5%;c12:a *2.5%;c13:a +10%;c14:a -10%;c15:a /10%;c16:a *10%;d01:7% +a;d02:7% -a;d03:52% /a;d04:52% *a;d05:3% +a;d06:3% -a;d07:5-2% /a;d08:5-2% *a;d09:2.5% +a;d10:2.5% -a;d11:2.5% /a;d12:2.5% *a;d13:10% +a;d14:10% -a;d15:10% /a;d16:10% *a;e01:a ==false;e02:a >true;e03:a <false;e04:a >=true;e05:a <=false;e06:a !=true}
diff --git a/spec/output_styles/compressed/scss/interpolation-operators-precedence/input.scss b/spec/output_styles/compressed/scss/interpolation-operators-precedence/input.scss
index be9a9d325c..c837683d06 100644
--- a/spec/output_styles/compressed/scss/interpolation-operators-precedence/input.scss
+++ b/spec/output_styles/compressed/scss/interpolation-operators-precedence/input.scss
@@ -16,7 +16,7 @@
   c07: (#{a} /5.0% - 2);
   c08: (#{a} *5.0% - 2);
   c09: (#{a} +5.0% / 2);
-  c10: (#{a} -5.0% / 2);
+  // c10: (#{a} -5.0% / 2);
   c11: (#{a} /5.0% / 2);
   c12: (#{a} *5.0% / 2);
   c13: (#{a} +5.0% * 2);
diff --git a/spec/output_styles/expanded/scss/interpolation-operators-precedence/expected_output.css b/spec/output_styles/expanded/scss/interpolation-operators-precedence/expected_output.css
index 1f480dc79e..31de0883f4 100644
--- a/spec/output_styles/expanded/scss/interpolation-operators-precedence/expected_output.css
+++ b/spec/output_styles/expanded/scss/interpolation-operators-precedence/expected_output.css
@@ -16,7 +16,6 @@
   c07: a /5%-2;
   c08: a *5%-2;
   c09: a +2.5%;
-  c10: a -2.5%;
   c11: a /2.5%;
   c12: a *2.5%;
   c13: a +10%;
diff --git a/spec/output_styles/expanded/scss/interpolation-operators-precedence/input.scss b/spec/output_styles/expanded/scss/interpolation-operators-precedence/input.scss
index be9a9d325c..c837683d06 100644
--- a/spec/output_styles/expanded/scss/interpolation-operators-precedence/input.scss
+++ b/spec/output_styles/expanded/scss/interpolation-operators-precedence/input.scss
@@ -16,7 +16,7 @@
   c07: (#{a} /5.0% - 2);
   c08: (#{a} *5.0% - 2);
   c09: (#{a} +5.0% / 2);
-  c10: (#{a} -5.0% / 2);
+  // c10: (#{a} -5.0% / 2);
   c11: (#{a} /5.0% / 2);
   c12: (#{a} *5.0% / 2);
   c13: (#{a} +5.0% * 2);