1) 9 : 4 = $$ \frac{9}{4} = 2\frac{1}{4}$$.
2) 48 : 7 = $$\frac{48}{7} = 6\frac{6}{7}$$.
3) 43 : 12 = $$\frac{43}{12} = 3\frac{7}{12}$$.
Ответ: 1) $$2\frac{1}{4}$$, 2) $$6\frac{6}{7}$$, 3) $$3\frac{7}{12}$$.