bonjour j ai besoin d aide svp merci ​

Réponse:

[tex]a = 7 + \frac{1}{2} = \frac{14 + 1}{2} = \frac{15}{2} [/tex]

[tex]b = 4 - \frac{1}{3} = \frac{12 - 1}{3} = \frac{11}{3} [/tex]

[tex]c = \frac{3}{4} + 3 = \frac{3 + 12}{4} = \frac{15}{4} [/tex]

[tex]d = \frac{15}{7} - 2 = \frac{15 - 14}{7} = \frac{1}{7} [/tex]

Réponse :

Explications étape par étape :

Bonjour

A = 7 + 1/2 = 7/1 + 1/2 = (7×2)/(1×2) + 1/2

A = 14/2 + 1/2 = 15/2

B = 4 - 1/3 = 4/1 - 1/3 = (4×3)/(1×3) - 1/3

B = 12/3 - 1/3 = 11/3

C = 3/4 + 3 = 3/4 + 3/1

C = 3/4 + (3×4)/(1×4)

C = 3/4 + 12 /4

C = 15/4

D = 15/7 - 2 = 15/7 - 2/1 = 15/7 - (2×7)/(1×7)

D = 15/7 - 14/7 = 1/7