12y+18-15y=9

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Solution for 12y+18-15y=9 equation: 



12y+18-15y=9

We move all terms to the left:

12y+18-15y-(9)=0

We add all the numbers together, and all the variables

-3y+9=0

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

-3y=-9

y=-9/-3

y=+3

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