7(-2+2x)=7x+21

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Solution for 7(-2+2x)=7x+21 equation: 



7(-2+2x)=7x+21

We move all terms to the left:

7(-2+2x)-(7x+21)=0

We add all the numbers together, and all the variables

7(2x-2)-(7x+21)=0

We multiply parentheses

14x-(7x+21)-14=0

We get rid of parentheses

14x-7x-21-14=0

We add all the numbers together, and all the variables

7x-35=0

We move all terms containing x to the left, all other terms to the right

7x=35

x=35/7

x=5

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