Question

Найдите значения выражений:1/9+4/9; 2)7/8-3/8; 3)15/19-6/19; 4)5/16+1/16; 5)3/14+11/14; 6)11/21+4/21​

Answer 1

Пошаговое объяснение:

$1) \frac{1}{9} + \frac{4}{9} = \frac{1 + 4}{9} = \frac{5}{9} \\ 2)\frac{7}{8} - \frac{3}{8} = \frac{7 - 3}{8} = \frac{4}{8} = \frac{1}{2} \\ 3) \frac{15}{19} - \frac{6}{19} = \frac{ 9 }{19} \\ 4) \frac{5}{16} + \frac{1}{16} = \frac{6}{16} \\ 5) \frac{ 3}{14} + \frac{11}{14} = \frac{14}{14} = 1 \\ 6) \frac{11}{21} + \frac{4}{21} = \frac{15}{21} = \frac{5}{7}$