Question

Значение выражения 3/4•1 5/6 -2/3:5/6+4 1/2

Answer 1

1) 3/4 * 1 5/6 = 3/4 * 11//6 = 11/8
2) 2/3 : 5/6 = 2/3 * 6/5 = 4/5 
3) 11/8 - 4/5 + 4 1/2 = 11/8 - 4/5 + 9/2 = 55/40 - 32/40 + 180/40 = 203/40 = 5 3/40 = 5,075
ОТВЕТ 5,075 

Answer 2

$\frac{3}{4} *1 \frac{5}{6} - \frac{2}{3} : \frac{5}{6} +4 \frac{1}{2} = \\ \\ \frac{3}{4} * \frac{11}{6} - \frac{2}{3} * \frac{6}{5} + \frac{9}{2} = \\ \\ \frac{3*11}{4*6} - \frac{2*6}{3*5} + \frac{9}{2} = \\ \\ \frac{11}{8} - \frac{4}{5} + \frac{9}{2} = \\ \\ \frac{55-32+180}{40} = \frac{203}{40} =5 \frac{3}{40} =5.075$