-3(-5z-2z)=7z

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Solution for -3(-5z-2z)=7z equation: 



-3(-5z-2z)=7z

We move all terms to the left:

-3(-5z-2z)-(7z)=0

We add all the numbers together, and all the variables

-3(-7z)-7z=0

We add all the numbers together, and all the variables

-7z-3(-7z)=0

We multiply parentheses

-7z+21z=0

We add all the numbers together, and all the variables

14z=0

z=0/14

z=0

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