Question

найдите значение разности( у дробей):

а) 1-8/15;                г)7 3/8-5;                      ж)10 3/23-7 19/46;

б)3-2/11;                 д)45-44 3/8;                  з)16 2/5-4 3/7;

в)4-3 4/9;                 е)6 7/15-3 1/5;              и)19 5/12-8 17/18

Answer 1

а)$1- frac{8}{15} = frac{15}{15} - frac{8}{15} = frac{7}{15}$
б)$3- frac{2}{11} = 2frac{11}{11} - frac{2}{11} = 2 frac{9}{11}$
в)$4- 3frac{4}{9} = 3frac{9}{9} - 3frac{4}{9} = frac{5}{9}$
г)$7frac{3}{8} - 5= 2frac{3}{8}$
д)$45-44frac{3}{8} = 44frac{8}{8} - 44frac{3}{8}= frac{5}{8}$
е)$6 frac{7}{15} - 3frac{1}{5} = frac{97}{15} - frac{16}{5} = frac{97}{15} - frac{48}{15} = frac{49}{15}$
ж)$10frac{2}{23} - 7 frac{19}{46} = frac{232}{23} - frac{341}{46} = frac{464}{46} - frac{341}{46} = frac{123}{46} = 2frac{31}{46}$
з)$16frac{2}{5} - 4 frac{3}{7} = frac{82}{5} - frac{31}{7} = frac{574}{35} - frac{155}{35} = frac{419}{35} = 11frac{34}{35}$
и)$19 frac{5}{12} - 8frac{17}{18} = frac{233}{12} - frac{161}{18} = frac{699}{36} - frac{322}{36} = frac{377}{36} = 10frac{17}{36}$