1)7.2:2.4=0.9:х
3=0,9:х
х=0,9:3
х=0,3
2)х + 3 7/10 = 5 3/10
х = 5 3/10 - 3 7/10
х = (5 - 3) + (3/10 - 7/10)
х = 1 6/10 = 1 3/5
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1)7.2:2.4=0.9:х
3=0,9:х
х=0,9:3
х=0,3
2)х + 3 7/10 = 5 3/10
х = 5 3/10 - 3 7/10
х = (5 - 3) + (3/10 - 7/10)
х = 1 6/10 = 1 3/5