3.x-15=-12.x=3

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Solution for 3.x-15=-12.x=3 equation: 



3.x-15=-12.x=3

We move all terms to the left:

3.x-15-(-12.x)=0

We add all the numbers together, and all the variables

3.x-(-12x)-15=0

We get rid of parentheses

3.x+12x-15=0

We add all the numbers together, and all the variables

15x-15=0

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

15x=15

x=15/15

x=1

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