15y+21=18

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Solution for 15y+21=18 equation: 



15y+21=18

We move all terms to the left:

15y+21-(18)=0

We add all the numbers together, and all the variables

15y+3=0

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

15y=-3

y=-3/15

y=-1/5

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