Selesaikan pengurangan dua pecahan berikut

Jawaban:

a. 3 1/4-3/5=13/4-3/5=65/20-12/20=43/20"

b. 4/2-3/4= 8/4-3/4=5/4"

c. 3/8-3/9= 3/72-3/72=9/72-8/72=1/72

d. 4/5-1/4=4/20-1/20=16/20-5/20=11/20"