Question

вычислите: 3/5:(9/10-3/5*8/9)

Answer 1

 3/5:(9/10-3/5*8/9)=3/5:(9/10-8/15)=3/5:(27/30-16/30)=3/5:11/30=3/5*30/11=1  7/11

Answer 2

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