Sagot :
Bonjour,
A= 7/4 - (1/5+3/10)=
7/4 - (2/10 +3/10) =
7/4 - 5/10 =
7/4 - 1/5=
35/20 - 4/20 = 31/20
C=3/4+(11/6-1/3)-(1/6+1)
= 3/4 + (11/6 -2/6) -(1/6 +6/6)
= 3/4 + 9/6 - 5/6
= 3/4 +4/6
= 3/4 + 2/3
=9/12 + 8/12 =
17/12
Bonjour,
A= 7/4-(1/5+3/10)
A= 7/4-(2/10+3/10)
A= 7/4-5/10
A= 70/40-20/40
A= 50/40 = 5×10/4×10 = 5/4
C= 3/4+(11/6-1/3)-(1/6+1)
C= 3/4+(11/6-2/6)-(1/6+6/6)
C= 3/4+9/6-7/6
C= 18/24+36/24-28/24
C= 26/24 = 13×2/12×2 = 13/12
Vérifie à la calculatrice mais normalement c'est bon !