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x-4x(7)=42
We simplify the equation to the form, which is simple to understand
x-4x(7)=42
Reorder the terms in parentheses
x+(-28x)=42
Remove unnecessary parentheses
+x-28x=+42
We move all terms containing x to the left and all other terms to the right.
+1x-28x=+42
We simplify left and right side of the equation.
-27x=+42
We divide both sides of the equation by -27 to get x.
x=-1.55555555556
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