Sagot :
Bonjour
Calculer :
B=15/4×(-2/3+9/10)
B = 15/4 x [(- 2 x 10) / (3 x 10) + (9 x 3) / (10 x 3)]
B = 15/4 x (- 20/30 + 27/30)
B = 15/4 x 7/30
B = 105/120
B = (15 x 7) / (15 x 8)
B = 7/8.
Bonjour
Calculer :
B=15/4×(-2/3+9/10)
B = 15/4 x [(- 2 x 10) / (3 x 10) + (9 x 3) / (10 x 3)]
B = 15/4 x (- 20/30 + 27/30)
B = 15/4 x 7/30
B = 105/120
B = (15 x 7) / (15 x 8)
B = 7/8.