4x+3=-8x-12

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Solution for 4x+3=-8x-12 equation: 



4x+3=-8x-12

We move all terms to the left:

4x+3-(-8x-12)=0

We get rid of parentheses

4x+8x+12+3=0

We add all the numbers together, and all the variables

12x+15=0

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

12x=-15

x=-15/12

x=-1+1/4

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