Bonjour est ce que quelqu’un pourrais m’aider. Bonne journée

Bonjour

(3/4 - 1/2) x 16/9

= (3/4 - 2/4) x 16/9

= 1/4 x 16/9

= 16/4 x 1/9

= (4 x 4)/4 x 1/9

= 4/9

(5^2 - 1)/(5 - 1)^2

= (25 - 1)/(4^2)

= 24/16

= (8 x 3)/(8 x 2)

= 3/2

(7/12 - 1/8) / (7/6 + 7/16)

= [(7 x 2)/(12 x 2) - (1 x 3)/(8 x 3)] / [(7 x 8)/(6 x 8) + (7 x 3)/(16 x 3)]

= (14/24 - 3/24) / (56/48 + 21/48)

= 11/24 / 77/48

= 11/24 x 48/77

= 11/77 x 48/24

= 11/(7 x 11) x (24 x 2)/24

= 1/7 x 2

= 2/7

(1/8 + 7/12) / (5/6 - 4/15)

= [(1 x 3)/(8 x 3) + (7 x 2)/(12 x 2)] / [(5 x 5)/(6 x 5) - (4 x 2)/(15 x 2)]

= (3/24 + 14/24) / (25/30 - 8/30)

= 17/24 / (17/30)

= 17/24 x 30/17

= 17/17 x 30/24

= (6 x 5)/(6 x 4)

= 5/4