bonjour j'aimerai que une personne ou plusieurs me montres les détaille de chaque calcul de cette exercice c'est un devoir de math ​svp

Bonsoir,

a. 5/6 + - 1/3

= 5/6 - 1/3

= 5/6 - (1 x 2) / (3 x 2)

= 5/6 - 2/6

= 3/6

= (3 x 1) / (3 x 2)

= 1/2

b. 7/9 - 1/- 27

= 7/9 + 1/27

= (7 x 3) / (9 x 3) + 1/27

= 21/27 + 1/27

= 22/27

c. - 8/5 + 23/50

= (- 8 x 10) / (5 x 10) + 23/50

= - 80/50 + 23/50

= -57/50

d. 45/15 - 7/3

= 45/15 - (7 x 5) / (3 x 5)

= 45/15 - 35/15

= 10/15

= (5 x 2) / (5 x 3)

= 2/5

e. 4/11 + 2

= 4/11 + (2 x 11) / (1 x 11)

= 4/11 + 22/11

= 26/11

f. - 8/- 91 + - 1/7

= 8/91 - 1/7

= 8/91 - (1 x 13) / (7 x 13)

= 8/91 - 13/91

= - 5/91

g. 5/2 - - 45/4 + 2/8

= 5/2 + 45/4 + 2/8

= (5 x 4) / (2 x 4) + (45 x 2) / (4 x 2) + 2/8

= 20/8 + 90/8 + 2/8

= 112/8

= (8 x 14) / (8 x 1)

= 14

h. 4 - 5/- 49 + (- 8/7)

= 4 + 5/49 - 8/7

= (4 x 49) / (1 x 49) + 5/49 - (8 x 7) / (7 x 7)

= 196/49 + 5/49 - 56/49

= 145/49