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7(x+1)=5x+21
We simplify the equation to the form, which is simple to understand
7(x+1)=5x+21
Reorder the terms in parentheses
+(+7x+7)=5x+21
Remove unnecessary parentheses
+7x+7=+5x+21
We move all terms containing x to the left and all other terms to the right.
+7x-5x=+21-7
We simplify left and right side of the equation.
+2x=+14
We divide both sides of the equation by 2 to get x.
x=7
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