\(a,-1,5.\dfrac{-2}{25}\)
\(b,1\dfrac{3}{5}.\dfrac{-3}{4}\)
\(c,\dfrac{-15}{4}:\dfrac{21}{-10}\)
\(d,\left(-2\dfrac{1}{7}\right):\left(-1\dfrac{1}{14}\right)\)
\(e,-3,5.\dfrac{-4}{21}\)
\(f,1\dfrac{2}{3}.\dfrac{-7}{3}\)
\(g,\dfrac{-5}{2}:\dfrac{3}{-4}\)
\(h,\left(-8\dfrac{2}{5}\right):\left(-2\dfrac{4}{5}\right)\)
dấu . là dấu x(nhân) nha , giúp mik với ạ
a: \(=\dfrac{-3}{2}\cdot\dfrac{-2}{25}=\dfrac{3}{25}\)
b: \(=\dfrac{8}{5}\cdot\dfrac{-3}{4}=\dfrac{-24}{20}=-\dfrac{6}{5}\)
c: \(=\dfrac{15}{4}\cdot\dfrac{10}{21}=\dfrac{150}{84}=\dfrac{25}{14}\)
d: \(=\dfrac{-15}{7}:\dfrac{-15}{14}=2\)
a) \(=-\dfrac{3}{2}.\dfrac{-2}{25}=\dfrac{3}{25}\)
b) \(=\dfrac{8}{5}.\dfrac{-3}{4}=\dfrac{-6}{5}\)
c) \(=\dfrac{-15}{4}.\dfrac{-10}{21}=\dfrac{25}{14}\)
d) \(=\dfrac{-15}{7}:\dfrac{-15}{14}=2\)
\(a,-1,5.\dfrac{-2}{25}=\dfrac{3}{25}\)
\(b,1\dfrac{3}{5}.\dfrac{-3}{4}=\dfrac{-6}{5}\)
\(c,\dfrac{-15}{4}:\dfrac{21}{-10}=\dfrac{25}{14}\)
\(d,\)\(\left(-2\dfrac{1}{7}\right):\left(-1\dfrac{1}{14}\right)=2\)
\(e,-3,5.\dfrac{-4}{21}=\dfrac{2}{3}\)
\(f,1\dfrac{2}{3}.\dfrac{-7}{3}=\dfrac{-35}{9}\)
\(g,\dfrac{-5}{2}:\dfrac{3}{-4}=\dfrac{10}{3}\)
\(h,\left(-8\dfrac{2}{5}\right):\left(-2\dfrac{4}{5}\right)=3\)
