7(-9+3x)=-21

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Solution for 7(-9+3x)=-21 equation:


7(-9+3x)=-21

We simplify the equation to the form, which is simple to understand 
7(-9+3x)=-21

Reorder the terms in parentheses
+(-63+21x)=-21

Remove unnecessary parentheses
-63+21x=-21

We move all terms containing x to the left and all other terms to the right. 
+21x=-21+63

We simplify left and right side of the equation. 
+21x=+42

We divide both sides of the equation by 21 to get x. 
x=2

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