(80-x)+18=9x+8

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Solution for (80-x)+18=9x+8 equation: 



(80-x)+18=9x+8

We move all terms to the left:

(80-x)+18-(9x+8)=0

We add all the numbers together, and all the variables

(-1x+80)-(9x+8)+18=0

We get rid of parentheses

-1x-9x+80-8+18=0

We add all the numbers together, and all the variables

-10x+90=0

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

-10x=-90

x=-90/-10

x=+9

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