-7z+4z=-15

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Solution for -7z+4z=-15 equation: 



-7z+4z=-15

We move all terms to the left:

-7z+4z-(-15)=0

We add all the numbers together, and all the variables

-3z+15=0

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

-3z=-15

z=-15/-3

z=+5

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