7x-15=9x+3

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Solution for 7x-15=9x+3 equation: 



7x-15=9x+3

We move all terms to the left:

7x-15-(9x+3)=0

We get rid of parentheses

7x-9x-3-15=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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