Question

7/26-1/39
Пожалуйста помогите!

Answer 1

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

Answer 2

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