7(-3+5x)=21-7x

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Solution for 7(-3+5x)=21-7x equation: 



7(-3+5x)=21-7x

We move all terms to the left:

7(-3+5x)-(21-7x)=0

We add all the numbers together, and all the variables

7(5x-3)-(-7x+21)=0

We multiply parentheses

35x-(-7x+21)-21=0

We get rid of parentheses

35x+7x-21-21=0

We add all the numbers together, and all the variables

42x-42=0

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

42x=42

x=42/42

x=1

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