2x-15=21+5x

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Solution for 2x-15=21+5x equation: 



2x-15=21+5x

We move all terms to the left:

2x-15-(21+5x)=0

We add all the numbers together, and all the variables

2x-(5x+21)-15=0

We get rid of parentheses

2x-5x-21-15=0

We add all the numbers together, and all the variables

-3x-36=0

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

-3x=36

x=36/-3

x=-12

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