4z+21=-5(z-6)

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Solution for 4z+21=-5(z-6) equation: 



4z+21=-5(z-6)

We move all terms to the left:

4z+21-(-5(z-6))=0



We calculate terms in parentheses: -(-5(z-6)), so:

-5(z-6)

We multiply parentheses

-5z+30

Back to the equation:

-(-5z+30)



We get rid of parentheses

4z+5z-30+21=0

We add all the numbers together, and all the variables

9z-9=0

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

9z=9

z=9/9

z=1

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