Réponse:
en espérant que ça t'aide
Bonjour,
B=
(2/7)/ (5/14) = (2*14) / (7*5) = 28/ 70
2 + 28/70 =
140/70 + 28/70 =
168/70 =
84/35 =
12/5
D=
(8/15) / (2/3) = 8/15 * 3/2 = 24/30
7/5 + 24/30 -19/2 =
42/30 +24/30 - 285/30 =
-219/30=
-73/10 =
-7,3
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Réponse:
en espérant que ça t'aide
Bonjour,
B=
(2/7)/ (5/14) = (2*14) / (7*5) = 28/ 70
2 + 28/70 =
140/70 + 28/70 =
168/70 =
84/35 =
12/5
D=
(8/15) / (2/3) = 8/15 * 3/2 = 24/30
7/5 + 24/30 -19/2 =
42/30 +24/30 - 285/30 =
-219/30=
-73/10 =
-7,3