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

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Solution for 3x-15=(2)(-x) equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x-(2(-1x))-15=0



We calculate terms in parentheses: -(2(-1x)), so:

2(-1x)

We multiply parentheses

-2x

Back to the equation:

-(-2x)



We get rid of parentheses

3x+2x-15=0

We add all the numbers together, and all the variables

5x-15=0

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

5x=15

x=15/5

x=3

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