-4(5+2z)+7z=0

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Solution for -4(5+2z)+7z=0 equation: 



-4(5+2z)+7z=0

We add all the numbers together, and all the variables

-4(2z+5)+7z=0

We add all the numbers together, and all the variables

7z-4(2z+5)=0

We multiply parentheses

7z-8z-20=0

We add all the numbers together, and all the variables

-1z-20=0

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

-z=20

z=20/-1

z=-20

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