Opérations sur les fractions et les fractions
Exercice 1 :
𝐴 =
2
3
+
5
3
×
4
7 𝐴 =
2
3
+
20
21
𝐴 =
14
21
+
20
21
𝑨 =
𝟑𝟒
𝟐𝟏 𝐵 =
7
30
+
4
3
÷
5
2 𝐵 =
7
30
+
4
3
×
2
5 𝐵 =
7
30
+
8
15
𝐵 =
7
30
+
16
30
𝑩 =
𝟐𝟑
𝟑𝟎 𝐶 =
1
5
−
7
5
×
2
3 𝐶 =
1
5
−
14
15
𝐶 =
3
15
−
14
15
𝑪 =
−𝟏𝟏
𝟏𝟓