Помогите!!! Не могла решить.

[latex]1. a+ \frac{3}{16} - \frac{3}{8} =a+ \frac{3}{16} - \frac{6}{16} =a- \frac{3}{16} = \frac{5}{12} - \frac{3}{16} = \frac{20-9}{48} = \frac{11}{48} 2. b+ \frac{5}{6} - \frac{3}{4} =b+ \frac{10-9}{12} =b+ \frac{1}{12} = \frac{11+1}{12} = \frac{12}{12} =1[/latex]