Ответ:
9; 0,75; 0,75; 1,65
Пошаговое объяснение:
5) (5 1/2 + 2 3/5) * 5/9 = (5,5+2,6) * 5/9=81/10 * 5/9=9;
6) (7 - 2 5/16)*4/25=4 11/16 * 4/25=75/16*4*25 = 3/4 = 0,75;
5) 2 2/5*5/6 - 3/4*1 2/3 = 12/5*5/6 - 3/4*5/3 = 2 - 1 1/4 = 3/4 = 0,75;
6) 1 17/28*7/9 + 14/25*5/7 = 45/28*7/9 + 14/25*5/7 = 5/4 + 2/5 = 1,25 + 0,4 = 1,65;
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Ответ:
9; 0,75; 0,75; 1,65
Пошаговое объяснение:
5) (5 1/2 + 2 3/5) * 5/9 = (5,5+2,6) * 5/9=81/10 * 5/9=9;
6) (7 - 2 5/16)*4/25=4 11/16 * 4/25=75/16*4*25 = 3/4 = 0,75;
5) 2 2/5*5/6 - 3/4*1 2/3 = 12/5*5/6 - 3/4*5/3 = 2 - 1 1/4 = 3/4 = 0,75;
6) 1 17/28*7/9 + 14/25*5/7 = 45/28*7/9 + 14/25*5/7 = 5/4 + 2/5 = 1,25 + 0,4 = 1,65;