2x+21=16-2x

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Solution for 2x+21=16-2x equation: 



2x+21=16-2x

We move all terms to the left:

2x+21-(16-2x)=0

We add all the numbers together, and all the variables

2x-(-2x+16)+21=0

We get rid of parentheses

2x+2x-16+21=0

We add all the numbers together, and all the variables

4x+5=0

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

4x=-5

x=-5/4

x=-1+1/4

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