Question

Решите по действиям :
1) 1.8 : ( - 1 целая 2/3) + (-15 целых 2/3) : 1 целая 1/3
2) 3 целых 3/4 : 0.03 + 4.52 : ( -4 целых 5/27)
3) (1.545 : 1.5 - 1) * (-2 целых 2/3) - 0.5 * 4/15

Answer 1

1.      ......................= - 2,83

1)   1,8:(-1 2/3)= - 18/10:5/3= - 9/5 * 3/5= - 27/25= - 1 2/25
2)   -15 2/3: 1 1/3= - 47/3 * 3/4= - 47/4= - 11 3/4
3)   - 1 2/25+( -11 3/4)= - 1 8/100 - 11 75/100= - 1,08 - 1,75= - 2,83

2.        .......................=123,92

1)   3 3/4 :0,03=3,75:0,03=125
2)   4,52:(-4 5/27)= - 4 13/25 : 4 5/27= - 113/25 * 27/113= - 27/25= - 1 2/25
3)   125+(-1 2/25)=125 - 1,08=123,92

3.   .................................= - 16/75

1)   1,545:1,5=1,03
2)   1,03 - 1=0,03
3)    0,03 * (-2 2/3)= - 3/100 * 8/3= - 2/25
4)   0,5*4/15=1/2 * 4/15=2/15
5)   -2/25 - 2/15= - 6/75 - 10/75= - 16/75