13x=39x-78

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Solution for 13x=39x-78 equation: 



13x=39x-78

We move all terms to the left:

13x-(39x-78)=0

We get rid of parentheses

13x-39x+78=0

We add all the numbers together, and all the variables

-26x+78=0

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

-26x=-78

x=-78/-26

x=+3

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