saya minta tolong nomor 8 aja pliss

=86 per 12
=disederhanakan 43 per 6
=7 1per 6

6 2/3 = 80/12
3/4 = 9/12

80/12 - 9/12 = 71/12

71/12 + 1 1/4
71/12 + 5/4
71/12 + 15/12 = 86/12

86/12 = 7 1/6

Maaf klo salah