12+(5+x)=-3

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Solution for 12+(5+x)=-3 equation: 



12+(5+x)=-3

We move all terms to the left:

12+(5+x)-(-3)=0

We add all the numbers together, and all the variables

(x+5)+12-(-3)=0

We add all the numbers together, and all the variables

(x+5)+15=0

We get rid of parentheses

x+5+15=0

We add all the numbers together, and all the variables

x+20=0

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

x=-20

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