Sagot :
Bonjour
A = 12/15 - 8/15 : 16/9
A = 12/15 - 8/15 x 9/16
A = 12/15 - 72/240
A = (12 x 16) / (15 x 16) - 72/240
A = 192/240 - 72/240
A = 120/240
A = (120 x 1) / (120 x 2)
A = 1/2.
Bonjour,
Calculer :
[tex]a = \frac{12}{15} - \frac{8}{15} \div \frac{16}{9} [/tex]
[tex]a = \frac{12}{15} - \frac{8}{15} \times \frac{9}{16} [/tex]
[tex]a = \frac{12}{15} - \frac{1}{15} \times \frac{9}{2} [/tex]
[tex]a = \frac{12}{15} - \frac{1}{5} \times \frac{3}{2} [/tex]
[tex]a = \frac{12}{15} - \frac{3}{10} [/tex]
[tex]a = \frac{1}{2} [/tex]
Bonne journée.