Помогите !! #1.(1/2+1/4)*8 #2. 2целых:2целых2/3+1целая4/5*3целых1/3-2целых5/6 Плиззз

1.
$(\frac{1}{2}+ \frac{1}{4} )*8 = (\frac{2}{4}+ \frac{1}{4} )*8 = \frac{3}{4} *8= \frac{3*8}{4}= 3*2=6$

2.
$2 :2\frac{2}{3} +1 \frac{4}{5} *3 \frac{1}{3} -2 \frac{5}{6} = \frac{2}{1} :\frac{8}{3} + \frac{9}{5} *\frac{10}{3} - \frac{17}{6} =\frac{2*3}{1*8} + \frac{9*10}{5*3} - \frac{17}{6} = \\ \\= \frac{3}{4} + \frac{6}{1} - \frac{17}{6}=\frac{9}{12} + \frac{72}{12} - \frac{34}{12} = \frac{47}{12} = 3 \frac{11}{12}$