bonjour pourriez vous m’aider sur cette exercice je ne comprend pas cordialement

Réponse :

Bonjour

Explications étape par étape

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 = -12/15×(-21)/(-6)×(-10)/14

E = -12/15×21/6×(-10)/14

E = -2×2×3×7×3×(-5)×2/5×3×3×2×7×2

E = 4/2

E = 2