40-x=3(12-x)

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Solution for 40-x=3(12-x) equation:


40-x=3(12-x)

We simplify the equation to the form, which is simple to understand 
40-x=3(12-x)

Reorder the terms in parentheses
40-x=+(+36-3x)

Remove unnecessary parentheses
+40-x=+36-3x

We move all terms containing x to the left and all other terms to the right. 
-1x+3x=+36-40

We simplify left and right side of the equation. 
+2x=-4

We divide both sides of the equation by 2 to get x. 
x=-2

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