\( \frac{2}{3}+\frac{2}{15}-\frac{4}{5}= \)
\( \frac{1}{15} \)
\( 0 \)
\( \frac{1}{3}+\frac{7}{15}-\frac{2}{5}= \)
\( \frac{2}{5} \)
\( \frac{2}{15} \)
23+215−45= \frac{2}{3}+\frac{2}{15}-\frac{4}{5}= 32+152−54=
0 0 0
13+715−25= \frac{1}{3}+\frac{7}{15}-\frac{2}{5}= 31+157−52=
25 \frac{2}{5} 52