bonjour Quelqu'un pourrait-il m'aider s'il vous plaît je n'arrive pas a le faire svp aider moi ​

Réponse :

Bonjour

Explications étape par étape

A = 11/8 +7/18 X 2/7

A = 11/8 +14/126

A = 11/8 X 126/126 +14/126 X 8/8

A = 1386/1008 + 112/1008

A = 1498/1008 = 749/504

B = 425/100 -3/2

B = 425/100 -3/2 X 50/50

B = 425/100 -150/100

B = 275/100 = 55/20 = 11/4

C = 5/7 -2/7 : 4/13

C = 5/7 -2/7 X 13/4

C = 5/7 -26/28

C = 5/7 X 4/4 -26/28

C = 20/28 -26/28

C = -6/28 = -3/14

D = (1/4 -1/5) X (7 +37/9)

D = (1/4 X 5/5 -1/5 X 4/4) X (7 X 9/9 +37/9)

D = (5/20 -4/20) X (63/9 +37/9)

D = 1/20 X 100/9

D = 100/180 = 10/18 = 5/9

E = 2/3 : 5/6 -2/5

E = 2/3 X 6/5 -2/5

E = 12/15 -2/5

E = 12/15 -2/5 X 3/3

E = 12/15 -6/15

E = 6/15

F = 3/4 +3 = 3/4 +3X4/4 = 3/4 +12/4 = 15/4 : 7/3 = 15/4 X 3/7 = 45/28

      1/3 +2   1/3 +2 X 3/3    1/3 + 6/3