Bonsoir,
Ex 1:
a) 9/7 + -8/7 = 9+-8/7= 1/7
b)-1/3 - 2/3 = -1-2/3=-3/3
C)5/41 -8/41=5-8/41=-3/41
D)-5/14–2/14=-5-(-2)/14=-3/14
E)-5/3+-6/3=-5+(-6)/3=-11/3
F)1/8-9/8=1-8/8=-7/8
G)-7/15– -7/15=-7-(-7)/15=0/15
H) 5/12+11/12- 7/12=5+11-7/12=16-7/12=9/12
Ex2:
A:7/8- -5/3=7*3/8*3 - -5*8/3*8=21/24-(-40)/24=21-(-40)/24=61/24
B:-8/15+-7/6=-8*6/15*6+-7*15/6*15=-48/90+-105/90=-153/90
C:-15/7+3/5=-15*5/7*5+3*7/5*7=-75/35+21/35=-75+21/35=-54/35
Je n’ai pas simplifier car aucun calcul sont possible.
*=multiplication
Et si j’ai faux aux réponses désolé
