-21=4x+16

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Solution for -21=4x+16 equation: 



-21=4x+16

We move all terms to the left:

-21-(4x+16)=0

We get rid of parentheses

-4x-16-21=0

We add all the numbers together, and all the variables

-4x-37=0

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

-4x=37

x=37/-4

x=-9+1/4

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