Pouvez vous m’aidez svp J= -21/-16 - 25/-24 B= -4/5/2/10 C = 15/28 × 7/25 × 1/6 K= 21/-8 × -22/15

Bonjour

J= -21/-16 - 25/-24

J = (21 x 3) / (16 x 3) + (25 x 2) / (24 x 2)

J = 63/48 + 50/48

J = 113/48

B= -4/5/2/10

B = - 4/5 x 10/2

B = - 40/10

B = (10 x - 4) / (10 x 1)

B = - 4

C = 15/28 × 7/25 × 1/6

C = 105/700 x 1/6

C = 700/4 200

C = (700 x 1) / (700 x 6)

C = 1/6

K= 21/-8 × -22/15

K = 462/120

K = (6 x 77) / (6 x 20)

K = 77/20.