4(-x)+(-x)=12+(-x)

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Solution for 4(-x)+(-x)=12+(-x) equation: 



4(-x)+(-x)=12+(-x)

We move all terms to the left:

4(-x)+(-x)-(12+(-x))=0

We add all the numbers together, and all the variables

4(-1x)+(-1x)-(12+(-1x))=0

We multiply parentheses

-4x+(-1x)-(12+(-1x))=0

We get rid of parentheses

-4x-1x-(12+(-1x))=0



We calculate terms in parentheses: -(12+(-1x)), so:

12+(-1x)

determiningTheFunctionDomain
(-1x)+12

We get rid of parentheses

-1x+12

Back to the equation:

-(-1x+12)



We add all the numbers together, and all the variables

-5x-(-1x+12)=0

We get rid of parentheses

-5x+1x-12=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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