20points !!!
Bonjour, est ce que vous pouvez m'aidez s'il vous plait j'ai vraiment besoin d'aide et celui qui m'aide je lui mets un merci en en meilleure réponse
merci d'avance
Je donne 20 points à celui qui répond
More Questions From This User See All
Lista de comentários
Bonjour,
a. 5/6 + - 1/3 = 5/6 - (1 x 2) / (3 x 2) = 5/6 - 2/6 = 3/6 = (3 x 1) / (3 x 2) = 1/2.
b. 7/9 - 1/- 27 = (7 x 3) / (9 x 3) + 1/27 = 21/27 + 1/27 = 22/27
c. - 8/5 + 23/50 = (- 8 x 10) / (5 x 10) + 23/50 = - 80/50 + 23/50 = - 57/50
d. 45/15 - 7/3 = 45/15 - (7 x 5) / (3 x 5) = 45/15 - 35/15 = 10/15 = (5 x 2) / (5 x 3) = 2/3
e. 4/11 + 2 = 4/11 + (2 x 11) / (1 x 11) = 4/11 + 22/11 = 26/11
f. 8/- 91 + - 1/7 = - 8/91 - (1 x 13)/ (7 x 13) = - 8/91 - 13/91 = - 21/91
g. 5/2 - - 45/4 + 2/8 = (5 x 4) / (2 x 4) + (45 x 2) / (4 x 2) + 2/8 = 20/8 + 90/8 + 2/8 = 112/8 = (8 x 14) / (8 x 1) = 14
h.4 - 5/- 49 + (- 8/7) = (4 x 49) / (1 x 49) + 5/49 - (8 x 7) / (7 x 7) = 196/49 + 5/49 - 56/49 = 145/49
i. - 7/50 + 7/75 = (- 7 x 3) / (50 x 3) + (7 x 2) / (75 x 2) = - 21/150 + 14/150 = - 7/150
j. 1/5 + - 2/3 = (1 x 3) / (5 x 3) - (2 x 5) / (3 x 5) = 3/15 - 10/15 = - 7/15
k. 1/12 - 1/9 = (1 x 3) / (12 x 3) - (1 x 4) / (9 x 4) = 3/36 - 4/36 = - 1/36
l. 4/18 + 5/27 = (4 x 6) / (18 x 6) + (5 x 4) / (27 x 4) = 24/108 + 20/108 = 44/108 = (4 x 11) / (4 x 27) = 11/27
m. 17/- 24 + (- 5/36) = (- 17 x 3) / (24 x 3) - (5 x 2) / (36 x 2) = - 51/72 - 1072 = - 41/72
n. 3/16 - 1/12 = (3 x 3)/ (16 x 3) - (1 x 4) / (12 x 4) = 9/48 - 4/48 = 5/48
o. 8/- 17 - (- 1/15) = (- 8 x 15) / (17 x 15) + (1 x 17) / (15 x 17) = - 120/255 + 17/255 = - 193/255