effectuer les calculet donner les resultats sous la forme la plus simple possible -8 -9 _ × _ = 12 -3 15 3 _ ÷ _ = 16 8 2 5
Mathématiques
adriana281
Question
effectuer les calculet donner les resultats sous la forme la plus simple possible
-8 -9
_ × _ =
12 -3
15 3
_ ÷ _ =
16 8
2 5 19
_ + _ × _ =
3 4 12
3 5 7
_ - _ × _ =
2 2 5
7 1 5
( _ - _ )÷ _ =
6 2 3
-8 -9
_ × _ =
12 -3
15 3
_ ÷ _ =
16 8
2 5 19
_ + _ × _ =
3 4 12
3 5 7
_ - _ × _ =
2 2 5
7 1 5
( _ - _ )÷ _ =
6 2 3
1 Réponse
-
1. Réponse maudmarine
-8 -9
_ × _ = 72/- 36 = - 72/36 = 36 x - 2 / 36 x 1 = - 2
12 -3
15 3
_ ÷ _ = 15/16 x 8/3 = 120/48 = 24 x 5 / 24 x 2 = 5/2
16 8
2 5 19
_ + _ × _ = 2/3 + 95/48 = 2 x 16 / 3 x 16 + 95/48 = 32/48 + 95/48 = 127/48
3 4 12
3 5 7
_ - _ × _ = 3/2 - 35/10 = 3 x 5 / 2 x 5 - 35/10 = 15/10 - 35/10 = 20/10 = 2
2 2 5
(7/6 - 1/2) : 5/3 = (7/6 - 1 x 3 / 2 x 3) x 3/5 = (7/6 - 3/6) x 3/5 = 4/6 x 3/5 = 12/35