Question

номер 480 Найдите значение выражений :​

Answer 1

Ответ:

1) $4\frac{2}{3} - \frac{2}{3}$ = $\frac{14}{3} - \frac{2}{3}$ = 4

2) $25\frac{21}{31}-\frac{21}{31}= \frac{796}{31} - \frac{21}{31} = 25$

3)  $40\frac{5}{106} - 11\frac{5}{y\106} = (40-11) + (\frac{5}{106} - \frac{5}{106} ) = 29 + 0 = 29$

4)  $20\frac{11}{13} - 9\frac{2}{13} = (20 - 9) + (\frac{11}{13} - \frac{2}{13}) = 11 + \frac{9}{13} = 11\frac{9}{13}$

5)  $19\frac{20}{29} - 1\frac{17}{29} = (19 - 1) + (\frac{20}{29} - \frac{17}{29}) = 18 + \frac{3}{29} = 18\frac{3}{29}$

6)  $9\frac{5}{9} - \frac{5}{9} = \frac{86}{9} - \frac{5}{9} = 9$

7)  $75\frac{41}{69} - 3\frac{41}{69} = (75 - 3) + (\frac{41}{69} - \frac{41}{69}) = 72 + 0 = 72$

8)  $8\frac{3}{7} - 2\frac{2}{7} = (8 - 2) + (\frac{3}{7} - \frac{2}{7}) = 6 + \frac{1}{7} = 6\frac{1}{7}$

9)  $10\frac{5}{17} - 4\frac{3}{17} = (10 - 4) + (\frac{5}{17} - \frac{3}{17}) = 6 + \frac{2}{17} = 6\frac{2}{17}$

10) $83\frac{63}{101} - 19\frac{24}{101} = (83 - 19) + (\frac{63}{101} - \frac{24}{101}) = 64 + \frac{39}{101} = 64\frac{39}{101}$