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Sagot :

MAUDMARINE

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

MARGESIMPSON1

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.

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