18-(-x)=91

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Solution for 18-(-x)=91 equation:


18-(-x)=91

We simplify the equation to the form, which is simple to understand 
18-(-x)=91

Remove unnecessary parentheses
18+1x=91

We move all terms containing x to the left and all other terms to the right. 
+1x=+91-18

We simplify left and right side of the equation. 
+1x=+73

We divide both sides of the equation by 1 to get x. 
x=73

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