6+3y+18=21-4y

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Solution for 6+3y+18=21-4y equation: 



6+3y+18=21-4y

We move all terms to the left:

6+3y+18-(21-4y)=0

We add all the numbers together, and all the variables

3y-(-4y+21)+6+18=0

We add all the numbers together, and all the variables

3y-(-4y+21)+24=0

We get rid of parentheses

3y+4y-21+24=0

We add all the numbers together, and all the variables

7y+3=0

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

7y=-3

y=-3/7

y=-3/7

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