Bonjour,
Exercice 13 :
a. [tex]\frac{17}{25} = \frac{34}{50} = \frac{68}{100}[/tex]
b. [tex]\frac{2}{5} = \frac{20}{50} = \frac{40}{100}[/tex]
c. [tex]\frac{1}{10} = \frac{5}{50} = \frac{10}{100}[/tex]
d. [tex]\frac{1}{2} = \frac{25}{50} = \frac{50}{100}[/tex]
Exercice 14 :
a. [tex]\frac{3}{4} = \frac{27}{36}[/tex]
b. [tex]\frac{5}{7} = \frac{25}{35}[/tex]
c. [tex]\frac{68}{64} = \frac{34}{32} = \frac{17}{16}[/tex]
d. [tex]\frac{35}{21} = \frac{70}{42} = \frac{10}{6}[/tex]
Exercice 15 :
a. [tex]\frac{12}{5} = \frac{24}{10}[/tex]
b. [tex]\frac{54}{25} = \frac{216}{100}[/tex]
c. [tex]\frac{300}{200} = \frac{150}{100}[/tex]
d. [tex]\frac{542}{5000} = \frac{1084}{10 000}[/tex]
e. [tex]\frac{40}{50} = \frac{80}{100}[/tex]
f. [tex]\frac{50}{10000} = \frac{5}{1000}[/tex]
En espérant t'avoir aidé :)
