3(z-5)=-21

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Solution for 3(z-5)=-21 equation: 



3(z-5)=-21

We move all terms to the left:

3(z-5)-(-21)=0

We add all the numbers together, and all the variables

3(z-5)+21=0

We multiply parentheses

3z-15+21=0

We add all the numbers together, and all the variables

3z+6=0

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

3z=-6

z=-6/3

z=-2

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