7x+15=12x+30

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Solution for 7x+15=12x+30 equation: 



7x+15=12x+30

We move all terms to the left:

7x+15-(12x+30)=0

We get rid of parentheses

7x-12x-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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