7-8x=87

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Solution for 7-8x=87 equation: 



7-8x=87

We move all terms to the left:

7-8x-(87)=0

We add all the numbers together, and all the variables

-8x-80=0

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

-8x=80

x=80/-8

x=-10

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