3/88+3/154+3/238+3/340+1/20
=3/8/11+3/11/14+3/14/17+3/17/20+1/20
=3/8/11+3/11/14+3/14/17+(3/17+1)/20
=3/8/11+3/11/14+3/14/17+1/17
=3/8/11+3/11/14+(3/14+1)/17
=3/8/11+3/11/14+1/14
=3/8/11+(3/11+1)/14
=3/8/11+1/11
=(3/8+1)/11
=1/8
3/88+3/154+3/238+3/340+1/20
=3/8/11+3/11/14+3/14/17+3/17/20+1/20
=3/8/11+3/11/14+3/14/17+(3/17+1)/20
=3/8/11+3/11/14+3/14/17+1/17
=3/8/11+3/11/14+(3/14+1)/17
=3/8/11+3/11/14+1/14
=3/8/11+(3/11+1)/14
=3/8/11+1/11
=(3/8+1)/11
=1/8