Question

пожалуйста быстро (10 - х) : 1 1/15 = 6 1/4

Answer 1

$(10 - x) \div 1 \frac{1}{15} = 6 \frac{1}{4} \\ 10 - x = 1 \frac{1}{15} \times 6 \frac{1}{4} \\ 10 - x = \frac{16 \times 25}{15 \times 4} \\ 10 - x = \frac{4 \times 5}{3} \\ 10 - x = \frac{20}{3} \\ x = 10 - \frac{20}{3} \\ x = 9 \frac{3}{3} - 6 \frac{2}{3} \\ x = 3 \frac{1}{3}$