Simplify 0.24*(-15)/4

Simplify 5/9/(1/11-5/22)+5/9/(1/15-2/3)

ta có:4/5:(4/5*5/4)/16/25-1/25+(27/25-2/25):4/7/(59/9-13/4)*36/17+6/5*1/2

       =4/5:3/5+7/4:7+3/5

        =4/3+1/4+3/5

         =3/2+3/5=21/10

a= (\(\frac{2}{5}\)+\(\frac{2}{9}\)+\(\frac{2}{11}\)\(\times\)\(\frac{5}{7}\)\(+\frac{7}{9}\)\(+\frac{7}{11}\)\()\)

\(9\frac{2}{9}+\frac{2}{3}+7\frac{7}{9}\)

\(=9+\frac{2}{9}+\frac{2}{3}+7+\frac{7}{9}\)

\(=\left(9+7\right)+\left(\frac{2}{9}+\frac{7}{9}\right)+\frac{2}{3}\)

\(=16+1+\frac{2}{3}\)

\(=17+\frac{2}{3}\)

\(=\frac{51}{3}+\frac{2}{3}\)

\(=\frac{53}{3}\)

\(\frac{5}{9}.\frac{10}{11}+\frac{5}{9}.\frac{14}{11}-\frac{5}{9}.\frac{15}{11}\)

\(=\frac{5}{9}\left(\frac{10}{11}+\frac{14}{11}-\frac{15}{11}\right)\)

\(=\frac{5}{9}.\frac{9}{11}\)

\(=\frac{5}{11}\)

\(\frac{1}{6}\div\left(0,75+\frac{1}{6}\right)-50\%-1^2\)

\(=\frac{1}{6}\div\left(\frac{9}{12}+\frac{2}{12}\right)-\frac{1}{2}-1\)

\(=\frac{1}{6}\div\frac{11}{12}-\frac{1}{2}-\frac{2}{2}\)

\(=\frac{1}{6}.\frac{12}{11}-\frac{3}{2}\)

\(=\frac{2}{11}-\frac{3}{2}\)

\(=\frac{4}{22}-\frac{33}{22}\)

\(=\frac{-29}{22}\)

ê làm đc tích cho nha

=0 jnh ban

\(B=\left(\frac{-3}{5}+\frac{4}{9}\right)\div\frac{7}{11}+\left(-\frac{2}{5}+\frac{5}{9}\right)\div\frac{7}{11}\)

\(B=\left(\frac{-3}{5}+\frac{4}{9}\right).\frac{7}{11}+\left(\frac{-2}{5}+\frac{5}{9}\right).\frac{7}{11}\)

\(B=\frac{7}{11}.\left(\frac{-3}{5}+\frac{-2}{5}+\frac{4}{9}+\frac{5}{9}\right)\)

\(B=\frac{7}{11}\left(\frac{-5}{5}+\frac{9}{9}\right)\)

\(B=\frac{7}{11}.\left(-1+1\right)=\frac{7}{11}.0=0\)

Dùng tích chất kết hợp cho nó lẹ

a/\(\left(\frac{-2}{3}+\frac{3}{7}\right):\frac{4}{5}+\left(\frac{-1}{3}+\frac{4}{7}\right):\frac{4}{5}=\left(\frac{-2}{3}+\frac{3}{7}+\frac{-1}{3}+\frac{4}{7}\right):\frac{4}{5}=\left(-1+1\right):\frac{4}{5}=0\)

b/\(\frac{5}{9}:\left(\frac{1}{11}-\frac{5}{22}\right)+\frac{5}{9}:\left(\frac{1}{15}-\frac{2}{3}\right)=\frac{5}{9}:\left(\frac{1}{11}-\frac{5}{22}+\frac{1}{15}-\frac{2}{3}\right)=\frac{5}{9}:\left(\frac{-3}{22}+\frac{-3}{5}\right)=\frac{-5}{3\left(\frac{1}{22}+\frac{1}{5}\right)}=\frac{-550}{81}\)

Mà hình như câu b mình làm sai

b/\(\frac{5}{9}:\left(\frac{1}{11}-\frac{5}{22}\right)+\frac{5}{9}:\left(\frac{1}{15}-\frac{2}{3}\right)=\frac{5}{9}:\frac{-3}{22}+\frac{5}{9}:\frac{-3}{5}=\frac{5.22}{9.-3}+\frac{5.5}{9.-3}=\frac{-\left(5.22+5.5\right)}{27}=-5\)
 

\(=\frac{-263}{8085}\)

BN ƠI = \(-\frac{263}{8085}\)NHA Nguyễn Hiền Anh!

\(\text{Kết quả là : }\) \(\frac{-263}{8085}\)

\(=\frac{11}{-5}\cdot\frac{-9}{11}\cdot\frac{15}{-14}\cdot\frac{2}{5}+-\frac{2}{77}\cdot\frac{5}{-3}\)
\(=\frac{9}{5}\cdot-\frac{15}{14}\cdot\frac{2}{5}+\frac{10}{231}\)
\(=-\frac{841}{1155}\)

\(=\frac{5}{9}:\left(-\frac{3}{22}\right)+\frac{5}{9}:\left(-\frac{3}{5}\right)\)

\(=\frac{5}{9}.\left[\left(-\frac{22}{3}\right)+\left(-\frac{5}{3}\right)\right]\)

\(=\frac{5}{9}.\left(-9\right)=-5\)