Question

4 целых -3 целых 3/4

Answer 1

$4 - 3 \frac{3}{4} = 3 \frac{4}{4} - 3 \frac{3}{4} = 3 - 3 + \frac{4 - 3}{4} = \frac{1}{4}$

Answer 2

$4 - 3 \frac{3}{4} = 4 - \frac{3 \times 4 + 3}{4} = 4 - \frac{15}{4} = 3 \frac{4}{4} - \frac{15}{4} = \frac{3 \times 4 + 4}{4} - \frac{15}{4} = \frac{16}{4} - \frac{15}{4} = \frac{1}{4}$