Question

Tolong dijawab ya!!!!!​

Answer 1

Verified answer

Jawaban:

1)

3/8 x 6/7 = 3 x 6 / 8 x 7 = 18/ 56 = 9/28

9/2 : 5/7 = 9/2 x 7/5

= 9 x 7 / 2 x 5

= 63/10 = 6 3/10

6/10 x 2/5 = 6 x 2 / 10 x 5

= 12/50 = 6/25

8/4 : 7/8 = 8/4 x 8/7

= 8 x 8 / 4 x 7

= 64/28

= 16/7

= 2 2/7

2) = 10 6/7 - 3 8/3 - 2/3

= 76/7 - ( 17/3 + 2/3)

= 76/7 - 19/3

= 228/21 - 133/21

= 95/21

= 4 11/21

3) = 85% x ¾ + 0,35 : 4/5

= 85/100 x ¾ + 35/100 : 4/5

= 225/100 + 35/100 x 5/4

= 225/100 + 175 / 400

= 900/400 + 175/400

= 1075/400

= 215/80

= 43/16

= 2 11/16

4). = 4⅗ - 2 8/4 + 6/2

= 23/5 - 16/4 + 6/2

= 23/5 + 6/2 - 16/4

= 46/10 + 30/10 - 16/4

= 76/10 - 16/4

= 152/20 - 80/20

= 72/20

= 18/5

= 3⅗

5) = 8/4 x 1,7 - 5/4

= 8/4 x 17/10 - 5/4

= 136/40 - 5/4

= 136/40 - 50/40

= 86/40

= 43/20

= 2 3/20

= 5/8 x 2,5 : 5%

= 5/8 x 25/10 : 5/100

= 125/80 x 100/5

= 12500/400

= 125/4

= 31¼