Question

б) 3 целых 5/24 минус 1 целых 7/36=

Answer 1

$3 \frac{5}{24} - 1 \frac{7}{36} = \frac{3 \times 24 + 5}{24} - \frac{1 \times 36 + 7}{36} = \frac{77}{24} - \frac{43}{36} = \frac{3 \times 77}{3 \times 24} - \frac{2 \times 43}{2 \times 36} = \frac{231}{72} - \frac{86}{72} = \frac{145}{72} = 2 \frac{1}{72}$