18x-309=91+8x

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Solution for 18x-309=91+8x equation: 



18x-309=91+8x

We move all terms to the left:

18x-309-(91+8x)=0

We add all the numbers together, and all the variables

18x-(8x+91)-309=0

We get rid of parentheses

18x-8x-91-309=0

We add all the numbers together, and all the variables

10x-400=0

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

10x=400

x=400/10

x=40

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