a.
[tex]\frac{25}{50} =\frac{5*5}{2*5*5} =\frac{1}{2}[/tex]
b.
[tex]\frac{32}{40}=\frac{2*2*2*2*2}{2*2*2*5}=\frac{4}{5}[/tex]
c.
[tex]\frac{36}{171}=\frac{2*2*3*3}{3*3*19}=\frac{4}{19}[/tex]
d.
[tex]\frac{12}{87}=\frac{2*2*3}{3*29}=\frac{4}{29}[/tex]
e.
[tex]\frac{80}{125} =\frac{2*2*2*2*5}{5*5*5}=\frac{16}{25}[/tex]
f.
[tex]\frac{84}{140} =\frac{2*2*3*7}{2*2*5*7} =\frac{3}{5}[/tex]
