12x+3-15=-30

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Solution for 12x+3-15=-30 equation: 



12x+3-15=-30

We move all terms to the left:

12x+3-15-(-30)=0

We add all the numbers together, and all the variables

12x+18=0

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

12x=-18

x=-18/12

x=-1+1/2

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