Question

de calculat
3 la puterea -1 × 5 plus (trei doimi)la puterea -1

Answer 1

$3^{-1}$*5+$( \frac{3}{2}) ^{-1}$=
=$\frac{5}{3}$+$\frac{2}{3}$=
=$\frac{7}{3}$=
=2,(3)