\frac{1}{6} \\
3) \frac{14}{3}+0.75= \frac{14}{3}+ \frac{3}{4}= \frac{14*4+3*3}{12}= \frac{65}{12} \\
4) \frac{65}{12}*3 \frac{9}{13}= \frac{65}{12}* \frac{48}{13}= \frac{13*5*12*4}{12*13} =20 \\
5) \frac{1}{6*20} *34 \frac{2}{7}= \frac{1}{20*6}* \frac{240}{7} = \frac{2}{7} \\
" alt="1) 1 \frac{4}{45}- \frac{1}{6}= \frac{49}{45}- \frac{1}{6}= \frac{49*2-15}{90}= \frac{83}{90} \\
2) \frac{83}{90}:5 \frac{8}{15}= \frac{83}{90}: \frac{83}{15}= \frac{83}{15*6}* \frac{15}{83}=
\frac{1}{6} \\
3) \frac{14}{3}+0.75= \frac{14}{3}+ \frac{3}{4}= \frac{14*4+3*3}{12}= \frac{65}{12} \\
4) \frac{65}{12}*3 \frac{9}{13}= \frac{65}{12}* \frac{48}{13}= \frac{13*5*12*4}{12*13} =20 \\
5) \frac{1}{6*20} *34 \frac{2}{7}= \frac{1}{20*6}* \frac{240}{7} = \frac{2}{7} \\
" align="absmiddle" class="latex-formula">