Bonjour pouvez m'aider au plus vite stv sur ses deux calcul merci

Réponse :

Explications étape par étape

Bonsoir

A = -2/3 x 6/-8 - 2/5 : -3/-5

A = 2/8 x 6/3 - 2/5 x 5/3

A = 2/(2 x 4) x (2 x 3)/3 - 2/3 x 5/5

A = 1/4 x 2 - 2/3

A = 2/4 - 2/3

A = 2/(2 x 2) - 2/3

A = 1/2 - 2/3

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

A = 3/6 - 4/6

A = -1/6

B = 2/3 : (-1/3) : 3/-4 + 1/-2

B = 2/3 / (-1/3) / (-3/4) - 1/2

B = 2/3 x -3 / (-3/4) - 1/2

B = -3/3 x 2 / (-3/4) - 1/2

B = -2 x -4/3 - 1/2

B = 8/3 - 1/2

B = (8 x 2)/(3 x 2) - (1 x 3)/(2 x 3)

B = 16/6 - 3/6

B = 13/6