I have 1/2-1/7 and3/5-1/2
1/2 - 1/7 = 7/14 - 2/14 = 5/143/5 - 1/2 = 6/10 - 5/10 = 1/10
\(\frac{1}{2}-\frac{1}{7}=\ \ \ | make\ common \denominator\\\\ \frac{7}{14}-\frac{2}{14}=\frac{7-2}{14}=\frac{5}{14}\\\\ \frac{3}{5}-\frac{1}{2}= \ \ \ | make\ common \denominator\\\\ \frac{6}{10}-\frac{5}{10}=\frac{1}{10}\)
