30y-20=100

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Solution for 30y-20=100 equation: 



30y-20=100

We move all terms to the left:

30y-20-(100)=0

We add all the numbers together, and all the variables

30y-120=0

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

30y=120

y=120/30

y=4

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