2x+15=7x-21

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Solution for 2x+15=7x-21 equation: 



2x+15=7x-21

We move all terms to the left:

2x+15-(7x-21)=0

We get rid of parentheses

2x-7x+21+15=0

We add all the numbers together, and all the variables

-5x+36=0

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

-5x=-36

x=-36/-5

x=7+1/5

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