15+x=-3-2x

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Solution for 15+x=-3-2x equation: 



15+x=-3-2x

We move all terms to the left:

15+x-(-3-2x)=0

We add all the numbers together, and all the variables

x-(-2x-3)+15=0

We get rid of parentheses

x+2x+3+15=0

We add all the numbers together, and all the variables

3x+18=0

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

3x=-18

x=-18/3

x=-6

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