-4x+13=21x-78

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Solution for -4x+13=21x-78 equation: 



-4x+13=21x-78

We move all terms to the left:

-4x+13-(21x-78)=0

We get rid of parentheses

-4x-21x+78+13=0

We add all the numbers together, and all the variables

-25x+91=0

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

-25x=-91

x=-91/-25

x=3+16/25

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