Réponses

2014-05-05T09:42:39+02:00
A ) 2/3 + 3/4 +5/6
=8/12+9/12+10/12
=27/12
=9/4

a) 2/3 + 5/9 + 5/6
=12/18+10/18+15/18
=37/18

b) 8 1/3 +3/4+3 5/6
=25/3+3/4+23/6
=100/12+9/12+46/12
=155/12

b) 2/3 +4 3/4 + 2 1/6
=2/3+19/4+13/6
=16/24+114/24+52/24
=182/24
=91/12

c) 9+4  3/5 +2 7/10
=9+23/5+27/10
=90/10+46/10+27/10
=163/10

c) 2  1/4+ 5 5/6 +7/8
=9/4+35/6+7/8
=54/24+140/24+21/24
=215/24

d) 1/2 + 2 1/4+2/3
=1/2+9/4+2/3
=6/12+27/12+8/12
=41/12

d)7 1/4 +3 2/3+ 4 1/3
=29/4+11/3+13/3
=87/12+44/12+52/12
=183/12