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220=4(-2+7x)+4
We simplify the equation to the form, which is simple to understand
220=4(-2+7x)+4
Reorder the terms in parentheses
220=+(-8+28x)+4
Remove unnecessary parentheses
+220=-8+28x+4
We move all terms containing x to the left and all other terms to the right.
-28x=-8+4-220
We simplify left and right side of the equation.
-28x=-224
We divide both sides of the equation by -028 to get x.
x=8
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