В_________С_________А , А (4 3/11) и С (-1 2/5)
(-1 2/5) А (4 3/11)
AC= =
АВ=2*АС=2* =2*5+ =10+ =10+ =
АВ= .
В_________С_________А , А (4 3/11) и С (-1 2/5)
(-1 2/5) А (4 3/11)
AC=
= ![\displaystyle 4\frac{3}{11} +1\frac{2}{5} = 4\frac{15}{55} +1\frac{22}{55} =](/tpl/images/2011/7598/8479e.png)
![\displaystyle 5\frac{37}{55}](/tpl/images/2011/7598/0731f.png)
АВ=2*АС=2*
=2*5+
=10+
=10+
= ![\displaystyle 11\frac{19}{55}](/tpl/images/2011/7598/03f67.png)
АВ=
.