84=10x-3+21x+4

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Solution for 84=10x-3+21x+4 equation: 



84=10x-3+21x+4

We move all terms to the left:

84-(10x-3+21x+4)=0

We add all the numbers together, and all the variables

-(31x+1)+84=0

We get rid of parentheses

-31x-1+84=0

We add all the numbers together, and all the variables

-31x+83=0

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

-31x=-83

x=-83/-31

x=2+21/31

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