3x+15=8x-30

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Solution for 3x+15=8x-30 equation: 



3x+15=8x-30

We move all terms to the left:

3x+15-(8x-30)=0

We get rid of parentheses

3x-8x+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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