bonjour besoin d aide pouvez vous m aider​

ex 1

mettre toutes les fractions sous un même dénominateur :)

3/7 + 1/14 = 6/14 + 1/14 = 7/14 = 1/2

11/15 - 1/3 = 11/15 - 5/15 = 6/15

2 + 1/3 = 6/3 + 1/3 = 7/3

13/12 - (1/6 + 2/3) = 13/12 - (1/6 + 4/6) = 13/12 - 5/6 = 13/12 - 10/12 = 3/12 = 1/4

Bonjour

Exercice 1:

a)3/7+1/14

=6/14+1/14

=7/14

=1/2

b)11/15-1/3

=11/15-5/15

=6/15

=2/5

c)2+1/3

=6/3+1/3

=7/3

d)13/12-(1/6+2/3)

=13/12-(1/6+4/6)

=13/12-5/6

=13/12-10/12

=3/12

=1/4