x+15=7x+3

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Solution for x+15=7x+3 equation: 



x+15=7x+3

We move all terms to the left:

x+15-(7x+3)=0

We get rid of parentheses

x-7x-3+15=0

We add all the numbers together, and all the variables

-6x+12=0

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

-6x=-12

x=-12/-6

x=+2

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