Question

tính nhanh:

17/23.8/6.23/17.(-80).3/4

Answer 1

\(\frac{17}{23}.\frac{8}{6}.\frac{23}{17}.\left(-80\right).\frac{3}{4}\)

\(=\left(\frac{17}{23}.\frac{23}{17}\right).\left(\frac{8}{6}.\frac{3}{4}\right).\left(-80\right)\)

\(=1.1.\left(-80\right)\)

\(=-80\)

Answer 2

\(\frac{17}{23}\times\frac{8}{6}\times\frac{23}{17}\times\left(-80\right)\times\frac{3}{4}\)

\(=\left(\frac{17}{23}\times\frac{23}{17}\right)\times\left(\frac{8}{6}\times\frac{3}{4}\right)\times\left(-80\right)\)

\(=1\times1\times\left(-80\right)\)

\(=-80\)