Вычислите (3-2 5/9):1/12= 2)(7/18+5/12-2/3)*0,9= 3)(1,35-4/15)*3/13+2 5/12= 4) 0,1:(2...

Question

Вычислите (3-2 5/9):1/12= 2)(7/18+5/12-2/3)*0,9= 3)(1,35-4/15)*3/13+2 5/12= 4) 0,1:(2 1/15+1/3)=

Answer 1

1)(3 - 2 5/9): 1/12 = 4/9: 1/12 = 4/9 * 12/1 = 16/3 = 5 1/3
2)(7/18  + 5/12-2/3) *9/10 = 5/36 * 9/10 = 3/24
3) (135/100- 4/15) *3/13 + 29/12 = 13/12 *3/13 + 2/12 = 3/12+29/12 = 32/12 =
=2 2/3

Comments

4)1/10:(31/15+1/3)=1/10:36/15=1/10*15/36=1/24

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ПЕРВЫЙ пример:
1) 3-2 5/9 =4/9
2)4/9:1/12=4/9×12/1=16/3
Второй ПРИМЕР:
1) 7/18+5/12-2/3=14/36+15/36-24/36=5/36
2) 5/36 ×0,9 =1/8
ТРЕТИЙ пример:
1) 1,35-4/15 =1 7/20-4/15=1 1/12
2) 1 1/12×3/13 = 13/12×3/13=1/4
3) 1/4+ 2 5/12 = 2 8/12 = 2 2/3
ЧЕТВЁРТЫЙ пример:
1) 2 1/15+1/3 = 2 6/15 = 2 2/5
2) 0,1 : 2 2/5 =1/10 : 12/5 = 1/10 × 5/12 = 1/24