Bonjour,
A=
3+ 6/15 -3/5
= 45/15+6/15 - 9/15
= 42/15 = 14/5
B=
3/2* -15/3
= -45/6 = -15/3 = -5
C=
4 - 48/168
= 672/168 -48/168
= 624/168 = 156 /42 = 78/21 = 26/ 14 =13/7
D=
(3/15 - 10/15) / ( -7/3)
= -7/15 * -3/7
= 21/ 105 = 3/ 15
E=
3+1/3 = 9/3 + 1/3 = 10/3
=3/4 + 1/3 = 9/12 + 4/12 = 13/12
=-> 10/3 * 12/13
=120/ 360 = 12/36 = 3/9 = 1/3
F=
2/3 -1/4 = 8/12 -3/12 = 5/12
2/3 +1/4 = 8/12 + 3/12 = 11/12
-> 5/12 * 12/11
= 5/11
J'espere avoirs repondue a ta question bon week-end !!
:)
