Question

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

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