15x+3=x-9

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



15x+3=x-9

We move all terms to the left:

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

We get rid of parentheses

15x-x+9+3=0

We add all the numbers together, and all the variables

14x+12=0

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

14x=-12

x=-12/14

x=-6/7

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