-4(z+15)=-20

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Solution for -4(z+15)=-20 equation: 



-4(z+15)=-20

We move all terms to the left:

-4(z+15)-(-20)=0

We add all the numbers together, and all the variables

-4(z+15)+20=0

We multiply parentheses

-4z-60+20=0

We add all the numbers together, and all the variables

-4z-40=0

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

-4z=40

z=40/-4

z=-10

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