manon60400 3/5+9/8 = 24/40+45/40 = 69/40

24/15÷35/18 = 24/15 x 18/35 = 24/5 x 6/35 = 144/175

-150 x -32/25 x -40/24 = -150 x -32/25 x -5/3 = -6 x (-32) x-5/3 = -2 x (-32) x (-5) = -32 x 10 = -320

2/7 - 5/14 + 4 = 4/14 - 5/14 + 56/14 = 55/14

visali2210 Normalement , c'est ca 3/5+9/8 = 24/40+45/40 = 69/4024/15÷35/18 = 24/15 x 18/35 = 24/5 x 6/35 = 144/175-150 x -32/25 x -40/24 = -150 x -32/25 x -5/3 = -6 x (-32) x-5/3 = -2 x (-32) x (-5) = -32 x 10 = -32