-3x-34=56-21x

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Solution for -3x-34=56-21x equation: 



-3x-34=56-21x

We move all terms to the left:

-3x-34-(56-21x)=0

We add all the numbers together, and all the variables

-3x-(-21x+56)-34=0

We get rid of parentheses

-3x+21x-56-34=0

We add all the numbers together, and all the variables

18x-90=0

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

18x=90

x=90/18

x=5

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