18-4z=-30

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Solution for 18-4z=-30 equation: 



18-4z=-30

We move all terms to the left:

18-4z-(-30)=0

We add all the numbers together, and all the variables

-4z+48=0

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

-4z=-48

z=-48/-4

z=+12

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