+21+15=21+2x+15

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Solution for +21+15=21+2x+15 equation: 



+21+15=21+2x+15

We move all terms to the left:

+21+15-(21+2x+15)=0

We add all the numbers together, and all the variables

-(2x+36)+21+15=0

We add all the numbers together, and all the variables

-(2x+36)+36=0

We get rid of parentheses

-2x-36+36=0

We add all the numbers together, and all the variables

-2x=0

x=0/-2

x=0

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