21=8x+3-5

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



21=8x+3-5

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(8x-2)+21=0

We get rid of parentheses

-8x+2+21=0

We add all the numbers together, and all the variables

-8x+23=0

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

-8x=-23

x=-23/-8

x=2+7/8

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