x-13=4x+7

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Solution for x-13=4x+7 equation: 



x-13=4x+7

We move all terms to the left:

x-13-(4x+7)=0

We get rid of parentheses

x-4x-7-13=0

We add all the numbers together, and all the variables

-3x-20=0

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

-3x=20

x=20/-3

x=-6+2/3

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