-21=4x+3

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Solution for -21=4x+3 equation: 



-21=4x+3

We move all terms to the left:

-21-(4x+3)=0

We get rid of parentheses

-4x-3-21=0

We add all the numbers together, and all the variables

-4x-24=0

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

-4x=24

x=24/-4

x=-6

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