Bonjour
6-8+5/8+6-10
= - 2 + 5/8 - 4
= (- 2 x 8) / (1 x 8) + 5/8 - (4 x 8) / (1 x 8)
= - 16/8 + 5/8 - 32/8
= - 43/8.