-7(x-3)=-7x-21

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


-7(x-3)=-7x-21

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

Reorder the terms in parentheses
+(-7x+21)=-7x-21

Remove unnecessary parentheses
-7x+21=-7x-21

We move all terms containing x to the left and all other terms to the right. 
-7x+7x=-21-21

We simplify left and right side of the equation. 
0x=-42

0=-42

The left and right sides are not equal, therefore there is no solution. This equation is invalid.

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