3.x=-15

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Solution for 3.x=-15 equation: 



3.x=-15

We move all terms to the left:

3.x-(-15)=0

We add all the numbers together, and all the variables

3.x+15=0

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

3.x=-15

x=-15/3.

x=-5

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