13x-2x=-77

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Solution for 13x-2x=-77 equation: 



13x-2x=-77

We move all terms to the left:

13x-2x-(-77)=0

We add all the numbers together, and all the variables

11x+77=0

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

11x=-77

x=-77/11

x=-7

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