-7x-13=78

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Solution for -7x-13=78 equation: 



-7x-13=78

We move all terms to the left:

-7x-13-(78)=0

We add all the numbers together, and all the variables

-7x-91=0

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

-7x=91

x=91/-7

x=-13

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