Sagot :
bonsoir,
A = - 5/24 + 3 /16
= - 10 /48 + 9/48
= - 1 /48
B = - 12/25 * - 35/36
= 420/900
= 7/15
C = 81/49 : - 27/35
= 81/49 * - 35/27
= - 2 835 / 1 323
= - 15/7
D = 32/25 : - 24/45
= 32/25 * - 45/24
= - 1440 / 600
= 12 / 5
Réponse :
Bonsoir
Explications étape par étape
A = -5/24 + 3/16
A = -5/24 X 16/16 + 3/16 X 24/24
A = -80/384 + 72/384
A = -8/384 = -1/48
B = 12/-25 X -35/36
B = -420/-900
B = + 42/90 = 7/15
C = -81/-49 : 27/-35
C = -81/-49 X -35/27
C = +2835/1323 = -315/147 = -105/49 = -15/7
D = -32/-25 : 24/-45
D = -32/-25 X -45/24
D = 1440/600 = 144/60 = 24/10 = 12/5