Question

5/48-1/12
5/12-5/18
1/14-1/21
3/26-4/39

Answer 1

$1) : frac{5}{48} - frac{1}{12} = frac{5}{48} - frac{1 times 4}{12 times 4} = frac{5}{48} - frac{4}{48} = frac{1}{48}$

$2) : frac{5}{12} - frac{5}{18} = frac{5 times 3}{12 times 3} - frac{5 times 2}{18 times 2} = frac{15}{36} - frac{10}{36} = frac{5}{36}$

$3) : frac{1}{14} - frac{1}{21} = frac{1 times 3}{14 times 3} - frac{1 times 2}{21 times 2} = frac{3}{42} - frac{2}{42} = frac{1}{42}$

$4) : frac{3}{26} - frac{4}{39} = frac{3 times 3}{26 times 3} - frac{4 times 2}{39 times 2} = frac{9}{78} - frac{8}{78} = frac{1}{78}$

Вот я помогла

Answer 2

помогла