7(-3-x)=

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


7(-3-x)=0

We simplify the equation to the form, which is simple to understand 
7(-3-x)=0

Reorder the terms in parentheses
+(-21-7x)=0

Remove unnecessary parentheses
-21-7x=0

We move all terms containing x to the left and all other terms to the right. 
-7x=0+21

We simplify left and right side of the equation. 
-7x=+21

We divide both sides of the equation by -7 to get x. 
x=-3

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