Sagot :
Bonjour
4/9 - 20/36 × ( 18/-24 - 1)
= 4/9 - 20/36 x [(6 x 3) / (6 x - 4) - (1 x 4) / (1 x 4)]
= 4/9 - (4 x 5) / (4 x 9) x (- 3/4 - 4/4)
= - 4/9 - 5/9 x (- 12/4)
= - 4/9 x 60/36
= - 4/9 x (12 x 5) / (12 x 3)
= - 4/9 x 5/3
= - 20/27
Bonjour,
Simplifier :
= 4/9 - 20/36 × (18/-24 - 1)
= 4/9 + 20/36 × 7/4
= 4/9 + 5/36 × 7
= 4/9 + 35/36
= 17/12
Bonne journée.