Réponse :
Bonjour c’est mieux avec les calculs de la copie
Explications étape par étape
1) 12/5 x 15/4 = 3 x 3 = 9
2) 3 x 6 = 18
3) 42/5 x 5/7 + 5/7 x 21 = 42/7 + 3 x 5 = 6 + 15 = 21
4) 3/4 x 8/21 x 13/6 x 35/3 x 9/5 = 8/4 x 3/3 x 9/21 x 13/6 x 35/5 = 2 x 3/7 x 13/6 x 7 = 2 x 13 x 3/6 x 7/7 = 2 x 13 x 1/2 = 13
5) 5/2 + 3/16 x 24 = 5/2 + 3 x 24/16 = 5/2 + 3 x 3/2 = 5/2 + 9/2 = 14/2 = 7
6) (2/3 + 4/9) x 216/10 = (6/9 + 4/9) x 216/10 = 10/9 x 216/10 = 216/9 = 24
7) 14/3 x 21/2 - 169/13 x 2 + 3 = 14/2 x 21/3 - 13 x 2 + 3 = 7 x 7 - 26 + 3 = 49 - 23 = 26
8) dénominateur 11/4 + 1/3 = 33/12 + 4/12 = 37/12
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
9 => R
18 => I
21 => F
13 => N
24 => C
26 => A
12 => O
CONFIRA ou FRONÇAI
