RĂ©ponse :
Bonjour
Explications Ă©tape par Ă©tape
F = -4/15 - (-2)/35
F = -56/210+12/210
F = -44/210
F = -22/105
A = -6/18-(-12)/24
A = -24/72+36/72
A = 12/72
A = 1/6
C = -(-3/4 - (-7)/(-3))+2/5
C = -(-3/4-7/3)+2/5
C = -(-9/12-28/12)+2/5
C = -(-37/12)+2/5
C = 37/12 + 2/5
C = 185/60+24/60
C = 209/60
I = -27/(-81)-42/49+52/63
I = 27/81 -42/49+52/63
I = 1323/3969-3402/3969+3276/3969
I = 1197/3969
I = 171/567
I = 57/189
I = 19/63
L = (-2-7/4)-[1/6-(7/10-3/4)]
L = (-8/4-7/4)-[1/6-(28/40-30/40)]
L = -15/4 - [(1/6-(-2/40)]
L = -15/4-(20/120+6/120)
L = -15/4-(26/120)
L = -15/4-26/120
L = -450/120-26/120
L = -476/120
L = -119/30
E = -12/15Ă—(-21)/(-6)Ă—(-10)/14
E = -12/15Ă—21/6Ă—(-10)/14
E = -2Ă—2Ă—3Ă—7Ă—3Ă—(-5)Ă—2/5Ă—3Ă—3Ă—2Ă—7Ă—2
E = 4/2
E = 2