use numbers 2,3,4,5,6,7,9 to replace (?) here is the problem ?0/??=??/?8=?/1

Question

please help me. thanks

Answer 1

?0/?? could be 90/45 or 70/35 so ?/1=2/1 using (2, 4, 5, 9) or (2, 3, 5, 7); and ??/?8=?6/?8=56/28 or 76/38 or 96/48 using (2, 5, 6) or (3, 6, 7) or (4, 6, 9). The only two sets that don't repeat any numbers are (2, 4, 5, 9) and (3, 6, 7). So the solution is 90/45=76/38=2/1.

Comments

thankyou very much. I understand it clearly.

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Also this two sets are correct . (2,3,5,7) and (4,6,9) 

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70/35=96/48=2/1 and 90/45=76/38=2/1. Yes, you're right, math93. How did I miss that?

I guess it's from finding one solution, sometimes it's assumed it's the only one.

Answer 2

70/35 = 96/48 = 2/1

Comments

thankyou so much. I hope you can help again.