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

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


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

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

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

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

We move all terms containing x to the left and all other terms to the right. 
+7x-1x-7x=+21-21

We simplify left and right side of the equation. 
-1x=0

We divide both sides of the equation by -1 to get x. 
x=-0

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