10z-30=90

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Solution for 10z-30=90 equation: 



10z-30=90

We move all terms to the left:

10z-30-(90)=0

We add all the numbers together, and all the variables

10z-120=0

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

10z=120

z=120/10

z=12

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