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-4x-4(-6)=21
We simplify the equation to the form, which is simple to understand
-4x-4(-6)=21
Reorder the terms in parentheses
-4x+(+24)=21
Remove unnecessary parentheses
-4x+24=+21
We move all terms containing x to the left and all other terms to the right.
-4x=+21-24
We simplify left and right side of the equation.
-4x=-3
We divide both sides of the equation by -4 to get x.
x=0.75
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