[tex] \frac{3}{4} + \frac{?}{?} = 1[/tex]
[tex] \frac{10}{4} - \frac{?}{?} = 2[/tex]
[tex] \frac{5}{7} + \frac{?}{?} = 1[/tex]
[tex] \frac{9}{4} - \frac{?}{?} = 2[/tex]
Me ayudan plis​