Автор - xxxcabn

Найдите значение выражения. С 96 по 99

Ответ

Автор - osage
96. а) 1 + 3/8= 8/8 + 3/8 = 11/8 = 1 3/8;
б) 1 - 3/8 = 8/8 - 3/8 = 5/8;
в) 2 + 1 3/4 = 2 + 7/4 = 8/4 + 7/4 = 15/4 = 3 3/4;
г) 2 - 1 3/4 = 2 - 7/4 = 8/4 - 7/4 = 1/4
97. а) 3 - 5/6 = 18/6 - 5/6 = 13/6 = 2 1/6;
б) 4 - 12/25 = 100/25 - 12/25 = 88/25 = 3 13/25;
в) 1 4/9 + 5 = 13/9 + 45/9 = 58/9 = 6 4/9;
г) 6 17/18 - 3 = 125/18 - 54/18 = 71/18 = 3 17/18;
98. а) 2 3/8 + 5/8 = 19/8 + 5/8 = 24/8 = 3;
б) 3 11/14 - 9/14 = 3 2/14;
в) 4 5/7 + 3/7 = 4 8/7 = 5 1/7;
г) 3 2/13 - 4/13 = 41/13 - 4/13 = 37/13 = 2 11/13.
99. а) 3 1/4 + 1 1/4 = 4 2/4 = 4 1/2;
б) 5 8/21 - 2 5/21 = 3 3/21 = 3 1/7;
в) 1 4/9 + 2 7/9 = 3 11/9 = 4 2/9;
г) 4 4/15 - 2 7/15 = 64/15 - 37/15 = 27/15 = 1 12/15

Ответ

Автор - HatikoO

Ответ:

96. а) 1 + frac{3}{8} =  1frac{3}{8} ;

б) 1 - frac{3}{8}  = frac{8}{8} - frac{3}{8} = frac{5}{8} ;

в) 2 + 1frac{3}{4} = 3frac{3}{4} ;

г) 2 - 1frac{3}{4} = 1frac{4}{4} - 1frac{3}{4} = frac{1}{4} ;

97. а) 3 - frac{5}{6} = 2frac{6}{6}  - frac{5}{6} = 2frac{1}{6} ;

б) 4 - frac{12}{25} = 3frac{25}{25} - frac{12}{25} = 3frac{13}{25} ;

в) 1frac{4}{9} + 5 = 6 frac{4}{9} ;

г) 6frac{17}{18} - 3 = 3 frac{17}{18} ;

98. а) 2frac{3}{8} + frac{5}{8} = 2frac{8}{8}  = 3 ;

б) 3frac{11}{14} - frac{9}{14}  = 3frac{2}{14} = 3frac{1}{7} ;

в) 4frac{5}{7} + frac{3}{7} = 4frac{8}{7} = 5frac{1}{7} ;

г) 3frac{2}{13} - frac{4}{13} = 2 frac{15}{13} - frac{4}{13} = 2frac{11}{13} ;

99. а) 3frac{1}{4} + 1frac{1}{4} = 4frac{2}{4} = 4frac{1}{2} ;

б) 5frac{8}{21} - 2frac{5}{21} = 3frac{3}{21} = 3frac{1}{7} ;

в) 1frac{4}{9} + 2frac{7}{9} = 3frac{11}{9} = 4frac{2}{9} ;

г) 4frac{4}{15} - 2frac{7}{15} = 3frac{19}{15} - 2frac{7}{15} = 1frac{12}{15} ;

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