ss="op">(</span><span class="fl">8</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>   0                          1                </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 0 "a+b+c"                    "0"              </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 "(1/2)a+(5/8)b+(3/4)c"     "(1/2)a+(1/4)b"  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2 "(3/14)a+(5/14)b+(15/28)c" "(4/7)a+(5/14)b" </s