2y-4-6y=21

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Solution for 2y-4-6y=21 equation: 



2y-4-6y=21

We move all terms to the left:

2y-4-6y-(21)=0

We add all the numbers together, and all the variables

-4y-25=0

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

-4y=25

y=25/-4

y=-6+1/4

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