Sagot :
Bonjour,
a= 60/100 + 5/100 = 65/100
b= 10/25 -1/25 = 9/25
c= 23 /110 -40/110 = -17/110
d= 6/18 - 11/18 = -5/18
Bonjour
a. 6/10 + 5/100
= (6 x 10) / (10 x 10)
= 60/100 + 5/100
= 65/100
= (5 x 13) / (5 x 20)
= 13/20
b. 2/5 - 1/25
= (2 x 5) / (5 x 5) - 1/25
= 10/25 - 1/25
= 9/25
c. 23/110 - 4/11
= 23/110 - (4 x 10) / (11 x 10)
= 23/110 - 40/110
= - 17/110
d. 1/3 - 11/18
= (1 x 6) / (3 x 6) - 11/18
= 6/18 - 11/18
= - 5/18.