Упрости дроби по образцу. 2:2 = 4:2 18 = 90 3 = 9 4 = 12 11 = 44 5 = 25

Разбираемся:

1) \(\frac{18}{90} = \frac{18:18}{90:18} = \frac{1}{5}\)

2) \(\frac{3}{9} = \frac{3:3}{9:3} = \frac{1}{3}\)

3) \(\frac{4}{12} = \frac{4:4}{12:4} = \frac{1}{3}\)

4) \(\frac{11}{44} = \frac{11:11}{44:11} = \frac{1}{4}\)

5) \(\frac{5}{25} = \frac{5:5}{25:5} = \frac{1}{5}\)