1y+3=7y+-21

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Solution for 1y+3=7y+-21 equation: 



1y+3=7y+-21

We move all terms to the left:

1y+3-(7y+-21)=0

We add all the numbers together, and all the variables

1y-(7y-21)+3=0

We add all the numbers together, and all the variables

y-(7y-21)+3=0

We get rid of parentheses

y-7y+21+3=0

We add all the numbers together, and all the variables

-6y+24=0

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

-6y=-24

y=-24/-6

y=+4

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