-40x+30x=5(-9-3x)

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Solution for -40x+30x=5(-9-3x) equation: 



-40x+30x=5(-9-3x)

We move all terms to the left:

-40x+30x-(5(-9-3x))=0

We add all the numbers together, and all the variables

-40x+30x-(5(-3x-9))=0

We add all the numbers together, and all the variables

-10x-(5(-3x-9))=0



We calculate terms in parentheses: -(5(-3x-9)), so:

5(-3x-9)

We multiply parentheses

-15x-45

Back to the equation:

-(-15x-45)



We get rid of parentheses

-10x+15x+45=0

We add all the numbers together, and all the variables

5x+45=0

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

5x=-45

x=-45/5

x=-9

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