bonjour
a . - 3 : 6/5 = - 3 * 5/6 = - 15/ 6 = - 5 /3
b . - 3/6 : 5 = - 3/6 * 1/5 = - 3/30 = - 1 /10
c . - 7/5 : ( 6 + 1/5 )
= - 7 /5 : ( 30/5 + 1 /5 )
= - 7/5 : 31/5
= - 7/5 * 5 / 31
= - 35 / 155 = - 7 / 31
