Page:Shinshiki Sanjutsu Kogi 00.djvu/263

247

（十一）

小數の加法減法

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よりて與へらるゝなり．

例．

${\begin{aligned}&{\frac {17}{70}}=0.2{\overline {428571}}\\&{\frac {3}{11}}=0.2{\overline {727272}}\qquad \qquad k=2,\ m=6\\{\frac {17}{70}}+{\frac {3}{11}}=&{\frac {397}{770}}=0.5{\overline {155844}}\\A=&2,\quad C=428571\\A'=&2,\quad C'=727272\qquad \qquad S=155843\\&{\frac {8}{7}}=0.{\overline {142857}}\\&{\frac {2}{11}}=0.{\overline {181818}}\qquad \qquad k=-1,\ m=6\\{\frac {8}{7}}-{\frac {2}{11}}=&{\frac {74}{77}}=0.{\overline {961038}}\\A=&1,\quad C=142857\\A'=&0,\quad C'=181818\qquad \qquad D=961039\end{aligned}}$

（十二）