x+9=4x-8

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Solution for x+9=4x-8 equation: 



x+9=4x-8

We move all terms to the left:

x+9-(4x-8)=0

We get rid of parentheses

x-4x+8+9=0

We add all the numbers together, and all the variables

-3x+17=0

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

-3x=-17

x=-17/-3

x=5+2/3

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