решите пропорцию 2целых2/7:x=2целых 19/28:3целых 3/4
х=(2 2/7*3 3/4):2 19/28
х=(16/7*15/4):75/28
х=60/7:75/28
х=60/7*28/75
х=16/5
х=3 1/5
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х=(2 2/7*3 3/4):2 19/28
х=(16/7*15/4):75/28
х=60/7:75/28
х=60/7*28/75
х=16/5
х=3 1/5