20y-12y-7=9

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Solution for 20y-12y-7=9 equation: 



20y-12y-7=9

We move all terms to the left:

20y-12y-7-(9)=0

We add all the numbers together, and all the variables

8y-16=0

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

8y=16

y=16/8

y=2

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