X-20+2x-10=90

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Solution for X-20+2x-10=90 equation: 



X-20+2X-10=90

We move all terms to the left:

X-20+2X-10-(90)=0

We add all the numbers together, and all the variables

3X-120=0

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

3X=120

X=120/3

X=40

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