3^(2-y)*7^y=21

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Solution for 3^(2-y)*7^y=21 equation: 



3^(2-y)*7^y=21

We move all terms to the left:

3^(2-y)*7^y-(21)=0

We add all the numbers together, and all the variables

3^(-1y+2)*7^y-21=0

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

3^(-1y+2)*7^y=21

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