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[tex]\frac{3}{4}-\frac{1}{8}=\frac{6}{8}-\frac{1}{8}=\frac{5}{8}\\\\\frac{1}{2}-\frac{1}{6}=\frac{3}{6}-\frac{1}{6}=\frac{2}{6}=\frac{1}{3}\\\\\frac{5}{6}-\frac{1}{3}=\frac{5}{6}-\frac{2}{6}=\frac{3}{6}=\frac{1}{2}\\\\\frac{5}{6}-\frac{1}{8}=\frac{20}{24}-\frac{3}{24}=\frac{17}{24}\\\\\frac{3}{4}-\frac{3}{10}=\frac{15}{20}-\frac{6}{20}=\frac{9}{20}\\\\\frac{1}{4}-\frac{1}{15}=\frac{15}{60}-\frac{4}{60}=\frac{11}{60}[/tex]
