Пошаговое объяснение:
1)
(4/25)/(8/15)=(4/25)х(15/8)=60/200=3/10
4 4/5 / 3 1/5 = (24/5)/(16/5)=(24/5)х(5/16)=24/16=1.5
2)
12х/13=48
х=48*13/12
х=52
3)
0.8х=160
х=200
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Пошаговое объяснение:
1)
(4/25)/(8/15)=(4/25)х(15/8)=60/200=3/10
4 4/5 / 3 1/5 = (24/5)/(16/5)=(24/5)х(5/16)=24/16=1.5
2)
12х/13=48
х=48*13/12
х=52
3)
0.8х=160
х=200