10-3x+x=90

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Solution for 10-3x+x=90 equation: 



10-3x+x=90

We move all terms to the left:

10-3x+x-(90)=0

We add all the numbers together, and all the variables

-2x-80=0

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

-2x=80

x=80/-2

x=-40

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