7,2*5/24 - 1/3=3/4 х1,5-1/3=3/4 х 1 1/2 - 1/3=3/4 х1 1/6=3/4 хх=1 1/6:3/4х=7/6 * 4/3х=14/9х=1 5/9. - ответ С
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7,2*5/24 - 1/3=3/4 х
1,5-1/3=3/4 х
1 1/2 - 1/3=3/4 х
1 1/6=3/4 х
х=1 1/6:3/4
х=7/6 * 4/3
х=14/9
х=1 5/9. - ответ С