помоги те пожалуйста
Ответы
Пошаговое объяснение:
1.
1) 3 7/16 : 20 5/8 = 55/16 : 165/8 = 55/16 * 8/165 = 1/2 * 1/3 = 1/6
2) 1/6 - 2/15 = 5/30 - 4/30 = 1/30
3) 1/30 * 0,9 = 1/30 * 9/10 = 1/10 * 3/10 = 3/100
4) 3/100 + 1,17 = 0,03 + 1,17 = 1,2
2.
1) 5,45 : 6 8/35 = 5 45/100 : 6 8/35 = 545/100 : 218/35 = 545/100 * 35/218 = 5/20 * 7/2 = 35/40 = 7/8
2) 2 9/16 + 7/8 = 2 9/16 + 14/16 = 2 23/16 = 3 7/16
3) 3 7/16 : 6 1/9 = 55/16 : 55/9 = 55/16 * 9/55 = 1/16 * 9/1 = 9/16
3.
1) 5 7/18 : 3 22/25 = 97/18 : 97/25 = 97/18 * 25/97 = 1/18 * 25/1 = 25/18 = 1 7/18
2) 1 7/18 - 5/12 = 1 28/72 - 30/72 = 100/72 - 30/72 = 70/72 = 35/36
3) 35/36 + 3 1/3 = 35/36 + 3 12/36 = 3 47/36 = 4 11/36
4) 4 11/36 + 3 = 7 11/36
4.
1) 3,48 * 75/116 = 3 48/100 * 75/116 = 348/100 * 75/116 = 3/4 * 3/1 = 9/4 = 2 1/4
2) 10 1/7 - 2 1/4 = 10 4/28 - 2 7/28 = 9 32/28 - 2 7/28 = 7 25/28
3) 7 25/28 : 31 4/7 = 221/28 : 221/7 = 221/28 * 7/221 = 1/4 * 1/1 = 1/4