Question

Есептеңіз а)14/17+2/17;41/100-33/100; б)4/24+3/36;12/18-5/60 в)4 2/5+9 3/7;10 4/9- 8 5/18 г)7/18×9/14;3 7/9×1 1/17​

Answer 1

A

14/17 + 2/17=16/17

41/100-33/100=8/100=2/25

Б

4/24 + 3/36=12/72 + 6/72=18/72=3/14

12/18 - 5/60=120/180 - 15/180=105/180=7/12

B

4 2/5 + 9 3/7 =4 14/35 + 9 15/35=13 29/35

10 4/9 - 8 5/18=10 8/18 - 8 5/18=2 3/18=2 1/6

Г

7/18*9/14=1/4

7/9*11/17=77/9*17=77/153

Answer 2

a)

14/17 + 2/17 = (14 + 2)/17 = 16/17

41/100 - 33/100 = (41 - 33)/100 = 8/100 = 1/12

б)

4/24 + 3/36 = (4/24) + (3/36) = (1/6) + (1/12) = 2/12 + 1/12 = 3/12 = 1/4

12/18 - 5/60 = (12/18) - (5/60) = (2/3) - (1/12) = 8/12 - 1/12 = 7/12

в)

4 2/5 + 9 3/7 = (4 + 9) + (2/5 + 3/7) = 13 + ((14/35) + (15/35)) = 13 + (29/35) = 13 29/35

10 4/9 - 8 5/18 = (10 - 8) + (4/9 - 5/18) = 2 + ((8/18) - (5/18)) = 2 + (3/18) = 2 + 1/6 = 13/6

г)

7/18 × 9/14 = (7 × 9)/(18 × 14) = 63/252 = 7/28 = 1/4

3 7/9 × 1 1/17 = (3 + 7/9) × (1 + 1/17) = (3 + 7/9) × (17/17 + 1/17) = (3 + 7/9) × (18/17) = (27/9 + 7/9) × (18/17) = (34/9) × (18/17) = (2 × 18)/(9 × 17) = 36/153 = 4/17