6(-7+5y)-9y=-42+21y

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Solution for 6(-7+5y)-9y=-42+21y equation: 



6(-7+5y)-9y=-42+21y

We move all terms to the left:

6(-7+5y)-9y-(-42+21y)=0

We add all the numbers together, and all the variables

6(5y-7)-9y-(21y-42)=0

We add all the numbers together, and all the variables

-9y+6(5y-7)-(21y-42)=0

We multiply parentheses

-9y+30y-(21y-42)-42=0

We get rid of parentheses

-9y+30y-21y+42-42=0

We add all the numbers together, and all the variables

=0

y=0/1

y=0

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