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7(x-1)+2x=12+5(x+1)
We simplify the equation to the form, which is simple to understand
7(x-1)+2x=12+5(x+1)
Reorder the terms in parentheses
+(+7x-7)+2x=12+5*(x+1)
Remove unnecessary parentheses
+7x-7+2x=+12+5+*(+x+1+)
Reorder the terms in parentheses
+7x-7+2x=12+(+5x+5)
Remove unnecessary parentheses
+7x-7+2x=+12+5x+5
We move all terms containing x to the left and all other terms to the right.
+7x+2x-5x=+12+5+7
We simplify left and right side of the equation.
+4x=+24
We divide both sides of the equation by 4 to get x.
x=6
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