21+7y=56

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Solution for 21+7y=56 equation: 



21+7y=56

We move all terms to the left:

21+7y-(56)=0

We add all the numbers together, and all the variables

7y-35=0

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

7y=35

y=35/7

y=5

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