Good evening
Step-by-step explanation:
[tex]\frac{8}{11}-\frac{1}{2} = \frac{8*2}{11*2}-\frac{1*11}{2*11} =\frac{16}{22}-\frac{11}{22} =\frac{5}{22}\\\\\frac{1}{10}+\frac{2}{5} = \frac{1}{10}+\frac{2*2}{5*2} =\frac{1}{10}+\frac{4}{10} =\frac{5}{10}\\\\\frac{8}{9}-\frac{3}{4} = \frac{8*4}{9*4}-\frac{3*9}{4*9} =\frac{32}{36}-\frac{27}{36} =\frac{5}{36}[/tex]
