-45x-13=77=90

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Solution for -45x-13=77=90 equation: 



-45x-13=77=90

We move all terms to the left:

-45x-13-(77)=0

We add all the numbers together, and all the variables

-45x-90=0

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

-45x=90

x=90/-45

x=-2

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