8+x+2x+1=90

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Solution for 8+x+2x+1=90 equation: 



8+x+2x+1=90

We move all terms to the left:

8+x+2x+1-(90)=0

We add all the numbers together, and all the variables

3x-81=0

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

3x=81

x=81/3

x=27

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