2/3+3 1/4= 5-1 3/8= 5 2/6-1/4= 6,2-275%= 4/5×20%=

2/3+3 1/4 = 2/3 + 13/4 = 8/12+39/12 = 47/12 = 3 9/12 = 3 3/4
5 - 1 3/8 = 4 8/8 - 1 3/8 = 3 5/8
5 2/6 - 1/4 =32/6 - 1/4 = 64/12 - 3/12 = 61/12 = 5 1/12
6,2 - 275%=31/50 - 11/4 = 2 3/4
4/5 × 20% =4/5 × 1/5 = 4/25

maaf ya kalau ada yang salah
semoga bisa membantu ;)