Tách từng câu ra giùm, như này ai giải nổi:)))))

=\(\frac{-7}{6}\)

 biết rồi nhưng trình bày như nào mới ra đc kết quả

a) \(\dfrac{4}{7}< \dfrac{6}{7}\)

\(\dfrac{15}{23}>\dfrac{12}{23}\)

\(\dfrac{45}{60}=\dfrac{3}{4}\)

b) \(\dfrac{8}{9}>\dfrac{11}{18}\)

\(\dfrac{13}{18}>\dfrac{2}{3}\)

\(\dfrac{27}{25}>1\)

\(\dfrac{7}{23}\cdot\left[\dfrac{-8}{6}-\dfrac{15}{48}\right]\)

\(=\dfrac{7}{23}\cdot\dfrac{-64-15}{48}\)

\(=\dfrac{7}{23}\cdot\dfrac{-69}{48}\)

\(=-3\cdot\dfrac{7}{48}=\dfrac{-7}{16}\)

mik cần gấp nên bn nào giúp mik với ạk

1, \(12:\left(\dfrac{3}{4}-\dfrac{5}{6}\right)^2=12:\left(-\dfrac{1}{12}\right)^2=12:\dfrac{1}{144}=1728\)

2, \(\dfrac{7}{23}.\left(-\dfrac{8}{6}-\dfrac{45}{18}\right)=\dfrac{7}{23}.-\dfrac{23}{6}=-\dfrac{7}{6}\)

1) 12 : (3/4 - 5/6)²

= 12 : (-1/12)²

= 12 : 1/144

=1728

2) 7/23 . (-8/6 - 45/18)

= 7/23 . (-23/6)

= -7/6

Chúc bạn học tốt!! ^^

\(\frac{7}{23}.\left(-\frac{8}{6}\right)-\frac{45}{18}=-\frac{28}{69}-\frac{45}{18}\)

                                    \(=-\frac{168}{414}-\frac{1035}{414}\)

                                    \(=-\frac{1203}{414}=-\frac{401}{138}\)

giúp mìn với các bạn ơi hhuhuhuhuhuhuh

a)  -15/2

b) 4/15

c) 19/8

d) -7/6

\(a.\)

\(-\frac{3}{4}.\frac{12}{-5}.\left(-\frac{25}{6}\right)\)

\(=\frac{9}{5}.\left(-\frac{25}{6}\right)\)

\(=-\frac{15}{2}\)

\(b.\)

\(\left(\frac{11}{12}:\frac{33}{16}\right).\frac{3}{5}\)

\(=\left(\frac{11}{12}.\frac{16}{33}\right).\frac{3}{5}\)

\(=\frac{4}{9}.\frac{3}{5}=\frac{4}{15}\)

\(c.\)

\(\left(-2\right).\frac{-38}{21}.\frac{-7}{4}.\left(\frac{-3}{8}\right)\)

\(=\frac{76}{21}.-\frac{7}{4}.\left(-\frac{3}{8}\right)\)

\(=-\frac{19}{3}.\left(-\frac{3}{8}\right)\)

\(=\frac{19}{8}\)

\(d.\)

\(\frac{7}{23}.\left[\left(-\frac{8}{6}\right)-\frac{45}{18}\right]\)

\(=\frac{7}{23}.\left(-\frac{23}{6}\right)\)

\(=-\frac{7}{6}\)