Question

7/26-1/39
Пожалуйста помогите!

Answer 1

7/26 - 1/39 = 21/78 - 2/78 = 19/78

Answer 2

$displaystyle tt frac{7}{26}-frac{1}{39}=frac{21}{78}-frac{2}{78}=bold{frac{19}{78}}$