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-7(3-x)+x=2x-15
We simplify the equation to the form, which is simple to understand
-7(3-x)+x=2x-15
Reorder the terms in parentheses
+(-21+7x)+x=2x-15
Remove unnecessary parentheses
-21+7x+x=+2x-15
We move all terms containing x to the left and all other terms to the right.
+7x+1x-2x=-15+21
We simplify left and right side of the equation.
+6x=+6
We divide both sides of the equation by 6 to get x.
x=1
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