Question

Решите и распишите
1)(-4 1/12+3 9/10):3 3/10=
2)(11/14-5/6):(11/14-3/4)=

Answer 1

Ответ:

1) $(-4frac{1}{12} +3frac{9}{10} ):3frac{3}{10} =(-frac{49}{12} +frac{39}{10} ):frac{33}{10} =frac{-49*5+39*6}{60} *frac{10}{33} =-frac{11}{60} *frac{10}{33} =-frac{1}{18}$

2) $(frac{11}{14} -frac{5}{6} ):(frac{11}{14} -frac{3}{4} )=frac{11*3-5*7}{42} :(frac{11}{14} -frac{3}{4} )=-frac{1}{21} :frac{11*2-3*7}{28} =-frac{1}{21}*frac{28}{1} =-1frac{1}{3}$