Question

7 1/30 - ( 5 17/45 - 2 2/9) = ?

Answer 1

1)$\frac{242}{45} -\frac{100}{45} =\frac{142}{45}$

2)$\frac{211}{30} - \frac{142}{45} = \frac{633-284}{90} =\frac{349}{90} =3\frac{79}{90}$