x+20+3x-10=90

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Solution for x+20+3x-10=90 equation:



x+20+3x-10=90
We move all terms to the left:
x+20+3x-10-(90)=0
We add all the numbers together, and all the variables
4x-80=0
We move all terms containing x to the left, all other terms to the right
4x=80
x=80/4
x=20

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