5/12+3/10 3/16+5/24 2/7-5/42

5/12+3/10=50/120+36/120=86/120=43/603/16+5/24=9/48+10/48=19/482/7-5/42=12/42-5/42=7/42=1/6

1)[latex] frac{5}{12} + frac{3}{10} = frac{25}{60} + frac{18}{60} = frac{43}{60} [/latex]2)[latex] frac{3}{16} + frac{5}{24} = frac{9}{48} + frac{10}{48} = frac{19}{48}[/latex]3)[latex] frac{2}{7} - frac{5}{42} = frac{12}{42} - frac{5}{42} = frac{7}{42} = frac{1}{6}[/latex]