2x+15=7x-30

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Solution for 2x+15=7x-30 equation: 



2x+15=7x-30

We move all terms to the left:

2x+15-(7x-30)=0

We get rid of parentheses

2x-7x+30+15=0

We add all the numbers together, and all the variables

-5x+45=0

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

-5x=-45

x=-45/-5

x=+9

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