2x-30=15-7x

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



2x-30=15-7x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x+7x-15-30=0

We add all the numbers together, and all the variables

9x-45=0

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

9x=45

x=45/9

x=5

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