Question

Ребят, я, наверно, пень. 10 раз решила и получила 10 разных ответов! Помогите, друзья!!!

Answer 1

$5frac{1}{6}+(3,25+2frac{1}{6}):2,6-frac{2}{3} cdot2,25= \ 1) 3,25+2frac{1}{6}=3frac{1}{4}+2frac{1}{6}=3frac{3}{12}+2frac{2}{12}=5frac{5}{12} \ 2) 5frac{5}{12}:2,6=frac{65}{12} cdot frac{10}{26}=frac{3}{6} cdot frac{5}{2}=frac{1}{2} cdot frac{5}{2}=frac{5}{4}=1frac{1}{4} \ 3) frac{2}{3} cdot 2,25= frac{2}{3} cdot frac{225}{100}= frac{2}{3} cdot frac{9}{4}=frac{3}{2}=1frac{1}{2}$
$4) 5frac{1}{6}+1frac{1}{4}-1frac{1}{2}= 5frac{2}{12}+1frac{3}{12}-1frac{6}{12}=6frac{5}{12}-1frac{6}{12}=5frac{17}{12}-1frac{6}{12}=4frac{11}{12}$

Answer 2

5.1/6+(3,25+2.1/6):2,6-2/3*2,25=5,75
1.3,25+2.1/6=13/4+13/6=(39+26)/12=65/12
2.65/12:13/5=65*5/12*13=25/12
3.5.1/6+25/12=(62+25)/12=87/12=29/4
4.2/3*9/4=3/2
5.29/4-3/2=(29-6)/4= 23/4=5.3/4=5,75