-x+7x+15=x+30

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



-x+7x+15=x+30

We move all terms to the left:

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

We add all the numbers together, and all the variables

6x-(x+30)+15=0

We get rid of parentheses

6x-x-30+15=0

We add all the numbers together, and all the variables

5x-15=0

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

5x=15

x=15/5

x=3

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