-9x+8=21x-17

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Solution for -9x+8=21x-17 equation: 



-9x+8=21x-17

We move all terms to the left:

-9x+8-(21x-17)=0

We get rid of parentheses

-9x-21x+17+8=0

We add all the numbers together, and all the variables

-30x+25=0

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

-30x=-25

x=-25/-30

x=5/6

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