Question

Решите дам 30 баллов

Answer 1

(1 3/5 + 1,8) * 1/2 = (8/5 + 18/10) * 1/2 = (16/10 + 18/10) * 1/2 =

= 34/10 * 1/2 = 34/20 = 1 14/20 = 1 7/10     или   1,7,

(6 - 4 8/15) : 2,2 = (5 15/15 - 4 8/15) : 22/10 =

= 1 7/15 * 10/22 = 22/15 * 10/22 = 10/15 = 2/3,

(1,25 + 1/6) * 2,4 = (5/4 + 1/6) * 24/10 = (15/12 + 2/12) * 24/10 =

= 17/12 * 24/10 = 34/10 = 3,4    или   3 2/5,

(5,4 - 2 1/3) : 7 2/3 = (54/10 - 7/3) : 23/3 =

= (162/30 - 70/30) * 3/23 = 46/15 * 3/23 = 2/5    или  0,4,

(2 1/3 + 0,25) * 0,12 = (7/3 + 1/4) * 12/100 =

= (28/12 + 3/12) * 12/100 = 31/12 * 12/100 = 31/100    или   0,31,

(7,6 - 4 3/4) : 1,9 = (76/10 - 19/4) : 19/10 =

= (152/20 - 95/20) * 10/19 = 57/20 * 10/19 = 3/2 = 1 1/2    или   1,5

Answer 2

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