tolong jawab pliss besok dikumpulin yang nomor 1 sampai 3 pliss yang jawab dengan benar mudah mudahan masuk surga amin

1. a. 9/10-2/5-3/8
=18/20-8/20-7,5/20
=2,5/20 = 0,125
b. 7/12-3/8-1/6
=7/12-4,5/12-2/12
=0,5/12 = 0,041
c. 7/8-3/16-1/6
=10,5/12-2,25/12-2/12
=6,25/12 = 0,52
d. 13/15-1/12-3/10
=26/30-2,5/30-9/30
=14,5/30 = 0,48
e. 4/5-3/10-4/15
=24/30-9/30-8/30
=7/30 = 0,23

2. a. 5 3/4-3 1/6-1/3
=23/4-19/6-1/3
=69/12-38/12-4/12
=27/12 = 2 3/12
b. 11 5/6-9 3/8 -1/4
= 71/6-75/8-1/4
=142/12-112,5/12-3/12
=26,5/12
c. 15 5/8-7 3/10-1/8
=125/8-73/10-1/8
=312,5/20-146/20-2,5/20
=164/20
=8 4/20 = 8 1/5
d. 9 13/14 -3 3/8-2/7
=139/14-27/8-2/7
=278/28-94,5/28-8/28
=175,5/28
e. 16 7/8-12 1/6 – 2/12
=135/8-73/6-2/12
=202,5/12-146/12-2/12
=54,5/12

3. a. 8 2/4-4 1/4-2 1/6
=34/4-17/4-13/6
=102/12-51/12-26/12
=25/12=2 1/2
b. 10 7/10-4 1/2-2 1/6
=107/10-9/2-13/6
=321/30-135/30-65/30
=121/30=4 1/30
c. 18 3/4 -12 2/3 – 3 1/2
=75/4-38/3-7/2
=225/12-152/12-42/12
=31/12=2 7/12
d. 14 5/6-8 5/16-4 3/8
=89/6-133/16-35/8
=178/12-99,75/12-52,5/12
=25,75/12
e. 20 3/10-10 3/4- 6 2/5
=203/10-43/4-32/5
=406/20-215/20-128/20
=63/20= 3 3/20