[tex]f)~~7\frac19-3\frac7{14}=7\frac19-3\frac12=7\frac2{18}-3\frac9{18}=6\frac{20}{18}-3\frac{9}{18}=3\frac{11}{18}[/tex]
[tex]g)~~8-1\frac13+2\frac58=7\frac33-1\frac13+2\frac58=6\frac23+2\frac58=6\frac{16}{24}+2\frac{15}{24}=8\frac{31}{24}=9\frac7{24}[/tex]
[tex]h)~~3\frac79+2\frac12-1\frac23=3\frac{14}{18}+2\frac{9}{18}-1\frac{12}{18}=5\frac{23}{18}-1\frac{12}{18}=4\frac{11}{18}[/tex]
[tex]i)~~25-\frac16-\frac12=24\frac66-\frac16-\frac36=24\frac56-\frac36=24\frac26=24\frac13[/tex]
[tex]j)~~66\frac13-35\frac27+1\frac12=66\frac{7}{21}-35\frac6{21}+1\frac12=31\frac1{21}+1\frac12=31\frac{2}{42}+1\frac{21}{42}=32\frac{23}{42}[/tex]