21y-7y=49

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Solution for 21y-7y=49 equation: 



21y-7y=49

We move all terms to the left:

21y-7y-(49)=0

We add all the numbers together, and all the variables

14y-49=0

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

14y=49

y=49/14

y=3+1/2

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