Sagot :
Bonjour,
C = ( 4/5 - 11/3 ) x 25/43
C = (12/15 - 55/15) x 25/43
C = (-43/15) x 25/43
C = -43/43 x 25/15
C = -25/15
C = -5/3
D= -2/5 : 3/15 + 2/15
D = -2/5 x 15/3 + 2/15
D = -2/5 x 5 + 2/15
D = -2 x 5/5 + 2/15
D = -2 + 2/15
D = -30/15 + 2/15
D = -28/15
Bonjour,
(4/5 - 11/3) * 25/43 =
(12/15 - 55/15) * 25/43 =
-43/15 * 25/43 =
(-43 * 25)/(15 * 43) =
-1075/645 = à simplifier
-2/5 * 15/3 + 2/15 =
-30/15 + 2/15 =
-28/15