Автор - Facebookzz

Решите весь 307 номер

Ответ

Автор - Нюра20032003
А)14+15=920
Б)13+17=1035=27
И т.д

Ответ

Автор - julyap
1)  frac{1}{4} + frac{1}{5} = frac{5}{20} + frac{4}{20} = frac{9}{20}  \  \ 2) frac{1}{3} + frac{1}{7} = frac{7}{21} + frac{3}{21} = frac{10}{21}  \  \ 3) frac{3}{5} + frac{3}{4} = frac{12}{20} + frac{15}{20} = frac{27}{20} =1 frac{7}{20}  \  \ 4)  frac{1}{2} + frac{7}{9} = frac{9}{18} + frac{14}{18} =  frac{23}{18} =1 frac{5}{18}  \  \ 5) frac{5}{7} +0= frac{5}{7}  \  \ 6)  frac{2}{3} - frac{2}{5} = frac{10}{15} - frac{6}{15} = frac{9}{15} = frac{3}{5}  \  \

7)  frac{1}{2} - frac{1}{3} = frac{3}{6} - frac{2}{6} = frac{1}{6}  \  \ 8)  frac{3}{5} - frac{4}{7} = frac{21}{35} - frac{20}{37} = frac{1}{37}  \  \ 9)  frac{5}{7} - frac{1}{6} = frac{30}{42} - frac{7}{42} = frac{23}{42}  \  \ 10)  frac{8}{9} -0= frac{8}{9}  \  \ 11)  frac{3}{4} + frac{4}{5} = frac{15}{20} + frac{16}{20} = frac{31}{20} =1 frac{11}{20}  \  \ 12)  frac{3}{4 }+ frac{2}{9} =  frac{27}{36} + frac{8}{36} = frac{35}{36}

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