Bonjour
Calculer.
a=1+2/3 = (1x 3) / (1 x 3) + 2/3 = 3/3 + 2/3 = 5/3
b=1-3/4 = (1 x 4) / (1 x 4) - 3/4 = 4/4 - 3/4 = 1/4
c=1-2/7 = (1 x 7) / (1 x 7) - 2/7 = 7/7 - 2/7 = 5/7
d=1/3+3/4 = (1 x 4) / (3 x 4) + (3x 3) / (4 x 3) = 4/12 + 9/12 = 13/12
e=–1/3+3/4 = (- 1 x 4) / (3 x 4) + (3 x 3) / (4 x 3) = - 4/12 + 9/12 = 5/12
f=9/2–13/7 = (9 x 7) / (2 x 7) - (13x 2) / (7x 2) = 63/14 - 26/14 = 37/14.
