21y+3=15.y=

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Solution for 21y+3=15.y= equation: 



21y+3=15.y=

We move all terms to the left:

21y+3-(15.y)=0

We add all the numbers together, and all the variables

21y-(+15.y)+3=0

We get rid of parentheses

21y-15.y+3=0

We add all the numbers together, and all the variables

6y+3=0

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

6y=-3

y=-3/6

y=-1/2

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