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5x-7=x+3(4+x)
We simplify the equation to the form, which is simple to understand
5x-7=x+3(4+x)
Reorder the terms in parentheses
5x-7=x+(+12+3x)
Remove unnecessary parentheses
+5x-7=+x+12+3x
We move all terms containing x to the left and all other terms to the right.
+5x-1x-3x=+12+7
We simplify left and right side of the equation.
+1x=+19
We divide both sides of the equation by 1 to get x.
x=19
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