\(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\)
\(=\frac{6}{12}+\frac{4}{12}+\frac{3}{12}\)
\(=\frac{6+4+3}{12}\)
\(=\frac{13}{12}\)
\(=1\frac{1}{12}\)
1/2+2/3+1/4=1*3*4/2*3*4;2*2*4/3*2*6;1*2*3/4*2*3=12/24;16/24+6/24=34/24=17/12
\(\frac{1}{2}\)+\(\frac{2}{3}\)+\(\frac{1}{4}\)
=\(\frac{6}{12}+\frac{8}{12}+\frac{3}{12}\)
=\(\frac{6+8+3}{12}\)
=\(\frac{17}{12}\)