15-(-3x)=18

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Solution for 15-(-3x)=18 equation: 



15-(-3x)=18

We move all terms to the left:

15-(-3x)-(18)=0

We add all the numbers together, and all the variables

-(-3x)-3=0

We get rid of parentheses

3x-3=0

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

3x=3

x=3/3

x=1

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