Question

Va rog frumos. Culegere pag 106 exercițiul 1. Clasa a 5​

Answer 1

Ответ:

a)

$\frac{7}{4} - \frac{3}{2} = \frac{7 - 6}{4} = \frac{1}{4}$

b)

$\frac{11}{12} - \frac{5}{6} = \frac{11 - 10}{12} = \frac{1}{12}$

c)

$\frac{6}{7} - \frac{2}{3} = \frac{18 - 14}{21} = \frac{4}{21}$

d)

$\frac{4}{5} - \frac{5}{8} = \frac{32 - 25}{40} = \frac{7}{40}$

e)

$\frac{7}{12} - \frac{3}{8} = \frac{14 - 9}{24} = \frac{5}{24}$

f)

$\frac{9}{14} - \frac{19}{35} = \frac{45 - 38}{70} = \frac{7}{70} = \frac{1}{10}$

g)

$\frac{5}{9} - \frac{7}{18} = \frac{10 - 7}{18} = \frac{3}{18} = \frac{1}{6}$

h)

$\frac{11}{16} - \frac{5}{12} = \frac{33 - 20}{48} = \frac{13}{48}$

i)

$\frac{8}{21} - \frac{4}{35} = \frac{40 - 12}{105} = \frac{28}{105} = \frac{4}{15}$

j)

$\frac{6}{7} - \frac{9}{14} = \frac{12 - 9}{14} = \frac{3}{14}$

k)

$\frac{9}{20} - \frac{5}{12} = \frac{27 - 25}{60} = \frac{2}{60} = \frac{1}{30}$

l)

$\frac{7}{18} - \frac{1}{45} = \frac{35 - 2}{90} = \frac{33}{90} = \frac{11}{30}$