Question

Помогите пожалуйста ​

Answer 1

55.

a)

$- frac{3}{5} - frac{4}{15} = - frac{9}{15} - frac{4}{15} = - frac{13}{15}$

б)

$frac{1}{8} - frac{5}{24} = frac{3}{24} - frac{5}{24} = - frac{2}{24} = - frac{1}{12}$

в)

$- frac{5}{18} + frac{1}{6} = - frac{5}{18} + frac{3}{18} = - frac{2}{18} = \ = - frac{1}{9}$

Г)

$- frac{7}{12} - frac{3}{4} = - frac{7}{12} - frac{9}{12} = - frac{16}{12} = \ = - 1 frac{4}{12} = - 1 frac{1}{3}$

Д)

$frac{9}{25} - frac{2}{5} = frac{9}{25} - frac{10}{25} = - frac{1}{25}$

Е)

$- frac{3}{11} + frac{10}{33} = - frac{9}{33} + frac{10}{33} = frac{1}{33}$

56.

а)

$- frac{8}{21} - frac{5}{7} = - frac{8}{21} - frac{15}{21} = - frac{23}{21} = \ = - 1 frac{2}{21}$

б)

$- frac{16}{27} + frac{2}{9} = - frac{16}{27} + frac{6}{27} = - frac{10}{27}$

в)

$frac{7}{19} - frac{3}{38} = frac{14}{38} - frac{3}{38} = frac{11}{38}$

Г)

$- frac{5}{48} - frac{19}{24} = - frac{5}{48} - frac{38}{48} = - frac{43}{48}$

Д)

$- frac{15}{16} + frac{13}{32} = - frac{30}{32} + frac{13}{32} = - frac{17}{32}$

Е)

$frac{1}{45} - frac{11}{15} = frac{1}{45} - frac{33}{45} = frac{32}{45}$