Bonsoir
Calculer ces expressions puis donner le résultat sous forme d'une fraction irréductible.
A= 3+7/5
A = (3 x 5)/5 + 7/5
A = 15/5 + 7/5
A = 22/5
B = 2/3 - 7/18 + 2/9
B = (2 x 6)/(3 x 6) - 7/18 + (2 x 2)/(9 x 2)
B = 12/18 - 7/18 + 4/18
B = 16/18 - 7/18
B = 9/18
B = 9/(2 x 9)
B = 1/2
C = 1/6 + 3/4 - 7/24
C = (1 x 4)/(6 x 4) + (3 x 6)/(4 x 6) - 7/24
C = 4/24 + 18/24 - 7/24
C = 22/24 - 7/24
C = 15/24
C = (3 x 5)/(3 x 8)
C = 5/8
D= 4/3 + 4/6 - 2
D = (4 x 2)/(3 x 2) + 4/6 - (2 x 6)/6
D = 8/6 + 4/6 - 12/6
D = 12/6 - 12/6
D = 0
