3x-5=8x+21

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Solution for 3x-5=8x+21 equation: 



3x-5=8x+21

We move all terms to the left:

3x-5-(8x+21)=0

We get rid of parentheses

3x-8x-21-5=0

We add all the numbers together, and all the variables

-5x-26=0

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

-5x=26

x=26/-5

x=-5+1/5

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