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7(x-3)+8-4x=0
We simplify the equation to the form, which is simple to understand
7(x-3)+8-4x=0
Reorder the terms in parentheses
+(+7x-21)+8-4x=0
Remove unnecessary parentheses
+7x-21+8-4x=0
We move all terms containing x to the left and all other terms to the right.
+7x-4x=0+21-8
We simplify left and right side of the equation.
+3x=+13
We divide both sides of the equation by 3 to get x.
x=4.3333333333333
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