4(-1+7x)=21+3x

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Solution for 4(-1+7x)=21+3x equation: 



4(-1+7x)=21+3x

We move all terms to the left:

4(-1+7x)-(21+3x)=0

We add all the numbers together, and all the variables

4(7x-1)-(3x+21)=0

We multiply parentheses

28x-(3x+21)-4=0

We get rid of parentheses

28x-3x-21-4=0

We add all the numbers together, and all the variables

25x-25=0

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

25x=25

x=25/25

x=1

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