3-4(x-7)=-21

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Solution for 3-4(x-7)=-21 equation:


3-4(x-7)=-21

We simplify the equation to the form, which is simple to understand 
3-4(x-7)=-21

Reorder the terms in parentheses
3+(-4x+28)=-21

Remove unnecessary parentheses
+3-4x+28=-21

We move all terms containing x to the left and all other terms to the right. 
-4x=-21-3-28

We simplify left and right side of the equation. 
-4x=-52

We divide both sides of the equation by -4 to get x. 
x=13

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