69-7x=90

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Solution for 69-7x=90 equation: 



69-7x=90

We move all terms to the left:

69-7x-(90)=0

We add all the numbers together, and all the variables

-7x-21=0

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

-7x=21

x=21/-7

x=-3

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