Question

(1 целая 1/2 - 1/4) : 3 целых 3/4 + 2/3 =? решите ( 20 )

Answer 1

$(1 \frac{1}{2} - \frac{1}{4} ) \div 3 \frac{3}{4} + \frac{2}{3} = \frac{3 \times 2 - 1}{4} \div \frac{15}{4} + \frac{2}{3} = \frac{5}{4} \times \frac{4}{15} + \frac{2}{3} = \frac{5 \times 4}{4 \times 15} + \frac{2}{3} = \frac{1 \times 1}{1 \times 3} + \frac{2}{3} = \frac{1}{3} + \frac{2}{3} = \frac{3}{3} = 1$