Réponses

2013-10-21T16:47:33+02:00
5+7+10=22
(7-5)x10=2x10=20
(10:5)+7=2+7=9
(5+7)x10=12x10=120
2013-10-21T16:55:14+02:00

7-5 =  2 
2 * 10 
= 20

5+7 
= 12
12 + 10 
= 22

5+7=12
12*10
=120

10/5 
= 2
7+2
=9