4z=-5(z-9)

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Solution for 4z=-5(z-9) equation: 



4z=-5(z-9)

We move all terms to the left:

4z-(-5(z-9))=0



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

-5(z-9)

We multiply parentheses

-5z+45

Back to the equation:

-(-5z+45)



We get rid of parentheses

4z+5z-45=0

We add all the numbers together, and all the variables

9z-45=0

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

9z=45

z=45/9

z=5

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