Bonjour
Calcule en détaillant les étapes
A= -25/3 × 9/ -20 - 11/12 : -4/3
A = 225/60 - 11/12 x - 3/4
A = 225/60 + 33/48
A= (15 x 15) / (15 x 4) + (3 x 11) / (3 x 16)
A = 5/4 + 11/16
A = (5 x 4) / (4 x 4) + 11/16
A = 20/16 + 11/16
A = 31/
B= (-1-3×5)² / 12²-2⁷
B = (- 1 - 15)² / 144 - 128
B = (- 16)² / 144 - 128
B = 256/144 - 128
B = (16 x 16)/ (16 x 9) - (128 x 9) / (1 x 9)
B = 16/9 - 1 152/9
B = - 1 136/9
