12x(-2)+15=-21

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Solution for 12x(-2)+15=-21 equation: 



12x(-2)+15=-21

We move all terms to the left:

12x(-2)+15-(-21)=0

We add all the numbers together, and all the variables

12x(-2)+36=0

We multiply parentheses

-24x+36=0

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

-24x=-36

x=-36/-24

x=1+1/2

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