7y+21=49

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Solution for 7y+21=49 equation: 



7y+21=49

We move all terms to the left:

7y+21-(49)=0

We add all the numbers together, and all the variables

7y-28=0

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

7y=28

y=28/7

y=4

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