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5(x-3)+7=12
We simplify the equation to the form, which is simple to understand
5(x-3)+7=12
Reorder the terms in parentheses
+(+5x-15)+7=12
Remove unnecessary parentheses
+5x-15+7=+12
We move all terms containing x to the left and all other terms to the right.
+5x=+12+15-7
We simplify left and right side of the equation.
+5x=+20
We divide both sides of the equation by 5 to get x.
x=4
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