Bonjour,
Calculer:
1/7+2/7= (1+2)/7= 3/7
17/11 - 3/11= (17-3)/11= 14/11
2/3 + 5/6= (2x2+5)/6= (4+5)/6=9/6= 3/2
7/4 - 3/8=(7x2 -3)/8= (14-3)/8= 11/8
1 +9/10=(1x10+9)/ 10= (10+9)/10= 19/10
2 + 3/100=(2x100+3)/100= (200+3)/100=203/100
1 + 3/7= (1x7+3)/7= (7+3)/7= 10/7
2 - 5/3= (2x3-5)/3= (6-5)/3= 1/3
