bonjour , pourriez vous-m'aidez je n'arrive pas a cette exercices Calculer
3 × 5/7
7 × 5/7
3/2 × 7/4
3/7 × 7/5
35/12 × 16/45
35 × 8/25
Trouver les inverses de 4, 3/5, - 7/2, 1/7
Division :
7/3 ÷ 6/5
1/3 ÷ 1/7
3 ÷ 5
7/2 ÷ 5/7
merci d'avance
3 × 5/7
7 × 5/7
3/2 × 7/4
3/7 × 7/5
35/12 × 16/45
35 × 8/25
Trouver les inverses de 4, 3/5, - 7/2, 1/7
Division :
7/3 ÷ 6/5
1/3 ÷ 1/7
3 ÷ 5
7/2 ÷ 5/7
merci d'avance
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Bonjour
3 × 5/7 = 15/7
7 × 5/7 = 35/7 = 5
3/2 × 7/4 = 21/8
3/7 × 7/5 = 15/35 = (5 x 3) / (5 x 7) = 3/7
35/12 × 16/45 = 560/540 = (20 x 28) / (20 x 27) = 28/27
35 × 8/25 = 280/25 = (5 x 56) / (5 x 5) = 56/5
Trouver les inverses de 4, 3/5, - 7/2, 1/7
Inverse de 4 = 1/4
Inverse de 3/5 = 5/3
Inverse de - 7/2 = - 2/7
Inverse de 1/7 = 7.
Division :
7/3 ÷ 6/5 = 7/3 x 5/6 = 35/18
1/3 ÷ 1/7 = 1/3 x 7 = 7/3
3 ÷ 5 = 3/5
7/2 ÷ 5/7 = 7/2 x 7/5 = 49/10.