3(x-1)=7x-31

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Solution for 3(x-1)=7x-31 equation: 



3(x-1)=7x-31

We move all terms to the left:

3(x-1)-(7x-31)=0

We multiply parentheses

3x-(7x-31)-3=0

We get rid of parentheses

3x-7x+31-3=0

We add all the numbers together, and all the variables

-4x+28=0

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

-4x=-28

x=-28/-4

x=+7

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