3(-x)+(-x)=9(-x)

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Solution for 3(-x)+(-x)=9(-x) equation: 



3(-x)+(-x)=9(-x)

We move all terms to the left:

3(-x)+(-x)-(9(-x))=0

We add all the numbers together, and all the variables

3(-1x)+(-1x)-(9(-1x))=0

We multiply parentheses

-3x+(-1x)-(9(-1x))=0

We get rid of parentheses

-3x-1x-(9(-1x))=0



We calculate terms in parentheses: -(9(-1x)), so:

9(-1x)

We multiply parentheses

-9x

Back to the equation:

-(-9x)



We add all the numbers together, and all the variables

-4x-(-9x)=0

We get rid of parentheses

-4x+9x=0

We add all the numbers together, and all the variables

5x=0

x=0/5

x=0

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