Bonjour quand même !
Et tu aurais pu faire un petit effort, ton message est illisible !
- Exercie 1 -
A = 4/15 - 3 × 9/5 + 10/3
A = 4/15 - 27/5 + 10/3
A = 4/15 - 81/15 + 50/15
A = -27/15
A = -9/5
B=399 - 244 + 0,5176
B = 3(9×11) - 2(4×11)
+ 0,5(16×11)
B = 3×311 - 2×211 + 0,5
×411
B = 911 - 411 + 211
B = 711
C=(5,2×10-4×608×103)/(13×10²×170×10-3)
C=((5,2×608)/(13×170)) ×10-4+3-2+3
C=((5,2×608)/(13×170)) ×100
C=(5,2×608)/(13×170)
C=(5,2×304×2)/(13×85×2)
C=(5,2×304)/(13×85)
C = 1,430 588 235
1 995 = 418 × 4 + 323
418 = 323 × 1 + 95
323 = 95 × 3 + 38
95 = 38 × 2 + 19
38 = 19 × 2 + 0
Donc :
D = 19
E = A + B + C + D
= -9/5 + 711 + 1,430 588 235 + 19
41,85
A toi de tout reprendre, bon courage