-21=16-x

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Solution for -21=16-x equation: 



-21=16-x

We move all terms to the left:

-21-(16-x)=0

We add all the numbers together, and all the variables

-(-1x+16)-21=0

We get rid of parentheses

1x-16-21=0

We add all the numbers together, and all the variables

x-37=0

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

x=37

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