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Mathematics, 13.12.2020 03:10 mmaglaya1

Solve each proportions: 1) 7/2 = a/5

2) 8/r = 9/7

3) 6/b = 7/5

PLEASE HELP!

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Solve each proportions: 1) 7/2 = a/5

2) 8/r = 9/7

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PLE...

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