4y-7=21y=

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Solution for 4y-7=21y= equation: 



4y-7=21y=

We move all terms to the left:

4y-7-(21y)=0

We add all the numbers together, and all the variables

-17y-7=0

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

-17y=7

y=7/-17

y=-7/17

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