15+3x=12x+20

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Solution for 15+3x=12x+20 equation: 



15+3x=12x+20

We move all terms to the left:

15+3x-(12x+20)=0

We get rid of parentheses

3x-12x-20+15=0

We add all the numbers together, and all the variables

-9x-5=0

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

-9x=5

x=5/-9

x=-5/9

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