Sagot :
-7/5 | 6 + 1/5 = -7/5 | 6/1 + 1/5
= -7/5 | 30/5 + 1/5
= -7/5 | 31/5
= -7/5 * 5/31
= - 7/31
( | représente la barre principale)
= -7/5 | 30/5 + 1/5
= -7/5 | 31/5
= -7/5 * 5/31
= - 7/31
( | représente la barre principale)