-40=-5(x-9)

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



-40=-5(x-9)

We move all terms to the left:

-40-(-5(x-9))=0



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

-5(x-9)

We multiply parentheses

-5x+45

Back to the equation:

-(-5x+45)



We get rid of parentheses

5x-45-40=0

We add all the numbers together, and all the variables

5x-85=0

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

5x=85

x=85/5

x=17

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