Question

Calculati:
$\frac{3}{1}$+$\frac{5}{2}$+$\frac{7}{3}$+$\frac{9}{4}$+ $\frac{11}{5}$+$\frac{1}{2}$+$\frac{2}{3}$+$\frac{3}{4}$+$\frac{4}{5}$

Answer 1

$=\frac{3}{1}+ \frac{6}{2}+ \frac{9}{3}+ \frac{12}{4}+ \frac{15}{5}=3+3+3+3+3=15$