Question

помогите пожалуйста!!!!! ​

Answer 1

$1)14 \frac{1}{4} + 7 \frac{5}{6} = (14 + 7) + ( \frac{1}{4} + \frac{5}{6} ) = 21 + ( \frac{ 3 + 10}{12} ) = 21 + 1 \frac{1}{2} = 22 \frac{1}{2} \\ 2)4 \frac{11}{18} + 8 \frac{7}{12} = (4 + 8) + ( \frac{11}{18} + \frac{7}{12} ) = 12 + ( \frac{22 + 21}{36} ) = 12 + 1 \frac{7}{36} = 13 \frac{7}{36} \\ 3)16 \frac{11}{18} - 8 \frac{8}{27} = (16 - 8) + ( \frac{11}{18} - \frac{8}{27} ) = 8 + \frac{17}{54} = 8 \frac{17}{54} \\ 4)9 \frac{7}{34} - 1 \frac{29}{102} = \frac{313}{34} - \frac{131}{102} = \frac{(939 - 131)}{102} = \frac{808}{102} = \frac{404}{51} = 7 \frac{47}{51}$