1. 7 - 5/6 = 2. 2 1/3 - 1/2 = 3. 6,5 - 2 2/5 - 75% = Pake cara ya

1). 7 - 5/6 = 42/6 - 5/6 = 37/6
2). 2 1/3 - 1/2 = 7/3 - 1/2 = 14/6 - 3/6 = 11/6
3. 6,5 - 2 2/5 - 75% = 65/100 - 12/5 - 75/100 = 65/100 - 240/100 - 75/100 = - 250/100

Soal diatas dikerjakan dengan menyamakan penyebut.

1.) 7 -5/6
= 42/6 - 5/6
= 37/6
= 6 1/6

2.) 2 1/3 -1/2
= 7/3 -1/2
= 14/6 -3/6
= 11/6
= 1 5/6

3.) 6,5 -2 2/5 -75%
= 65/10 -12/5 -75/100
= 650/100 -240/100 -75/100
= 410/100 -75/100
= 335/100
= 3 35/100
= 3 7/20

semoga membantu :)