Question

\(\frac{12}{25}.\frac{23}{7}-\frac{12}{25}.\frac{12}{7}\)

\(\frac{-6}{11}.\frac{7}{10}.\frac{11}{-6}.(-20)\)

Answer 1

\(\frac{25}{12}.\frac{23}{7}-\frac{25}{12}.\frac{12}{7}\)

\(=\frac{25}{12}.\left(\frac{23}{7}-\frac{12}{7}\right)\)\(\)

\(=\frac{25}{12}.\frac{11}{7}\)

\(=\frac{275}{84}\)

\(-\frac{6}{7}.\frac{7}{10}.\frac{11}{-6}.\left(-20\right)\)

\(=-\frac{3}{5}.\frac{-11}{6}.\left(-20\right)\)

\(=\frac{11}{10}.\left(-20\right)\)

\(=-22\)

Answer 2

Tính

\(\frac{12}{25}.\frac{23}{7}-\frac{12}{25}.\frac{12}{7}=\frac{12}{25}\left(\frac{23}{7}-\frac{12}{7}\right)\)

                                         \(=\frac{12}{25}.\frac{11}{7}=\frac{132}{175}\)

\(-\frac{6}{11}.\frac{7}{10}.\frac{11}{-6}.\left(-20\right)\)

\(=\frac{-6.7.11.\left(-20\right)}{11.10.\left(-6\right)}=7.\left(-20\right)=-140\)

Answer 3

Sửa lại câu thứ 2 :vv

\(-\frac{6}{11}.\frac{7}{10}.\frac{11}{6}.\left(-20\right)=\frac{-6.7.11.\left(-20\right)}{11.10.6}=7.\left(-2\right)=-14\)

Answer 4

sửa câu 2

\(-\frac{6}{11}.\frac{7}{10}.\frac{-11}{6}.\left(-20\right)\)

\(=-\frac{21}{55}.\frac{-11}{6}.\left(-20\right)\)

\(=\frac{7}{10}.\left(-20\right)\)

\(=-14\)

Answer 5

a ,12/25 . 23/7 - 12/25 . 12/7

= 12/25 . ( 23/7 - 12/7)

= 12/25 . 11/7

= 132/175

b , -6/11 . 7/10 . 11/-6 . (-20)

= -6.7.11.(-20) / 11.10.6

= 7 . (-20)

=-140 .

Answer 6

Bài làm 

a, \(\frac{12}{25}.\frac{23}{7}-\frac{12}{25}.\frac{12}{7}=\frac{12}{25}\left(\frac{23}{7}-\frac{12}{7}\right)=\frac{12}{25}.\frac{11}{7}=\frac{132}{175}\)

b, \(\frac{-6}{11}.\frac{7}{10}.\left(\frac{11}{-6}\right)\left(-20\right)=\frac{-6.7.11.\left(-20\right)}{11.10.\left(-6\right)}=\frac{7.\left(-20\right)}{10}=\frac{-140}{10}=-14\)

Answer 7

cảm ơn các bn trả lời câu hỏi của mik

Answer 8

thank you very much...