-4z-7=-9

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Solution for -4z-7=-9 equation: 



-4z-7=-9

We move all terms to the left:

-4z-7-(-9)=0

We add all the numbers together, and all the variables

-4z+2=0

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

-4z=-2

z=-2/-4

z=1/2

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