Explicație pas cu pas:
a.
[tex] \frac{72}{48} \: si \: \frac{150}{125} \\ \frac{72}{48} = \frac{36}{24} = \frac{18}{12} = \frac{9}{6} = \frac{3}{2} \\ \frac{150}{125} = \frac{30}{25 } = \frac{6}{5} [/tex]
b.
[tex] \frac{2}{5} = \frac{40}{100} \\ \frac{7}{10} = \frac{70}{100} [/tex]
c.
[tex] \frac{12}{5} = \frac{x}{20} = 5x = 12 \times 20 \\ 5x = 240 \\ x = 240 \div 5 \\ x = 48[/tex]
