Question

Đã trả lời bởi chuyên gia

Answer 1

4/3+1/6

= 8/6 + 1/6

= 9/6

= 3/2

4/15+3/10

= 8/30 + 9/30

= 17/300

4/15 - 3/25

= 20/75 - 9/75

= 11/75

5/4+3/4 -1/6

= 8/4 - 1/6

= 48/24 - 4/24

= 44/24

= 11/6

2/15 -65 -4/39
= -4223/65

Answer 2

ta có:

$\frac{4}{3} + \frac{1}{6} = \frac{4 \times 2}{3 \times 2} + \frac{1}{6} = \frac{8}{6} + \frac{1}{6} = \frac{9}{6} = \frac{3}{2} \frac{4}{15} + \frac{3}{10} = \frac{4 \times 2}{15 \times 2} + \frac{3 \times 3}{10 \times 3} = \frac{8}{30} + \frac{9}{30} = \frac{17}{30} \frac{4}{15} - \frac{3}{25} = \frac{4 \times 5}{15 \times 5} - \frac{3 \times 3}{25 \times 3} = \frac{20}{75} - \frac{9}{75} = \frac{11}{75} \frac{5}{4} + \frac{3}{4} - \frac{1}{6} = \frac{8}{4} - \frac{1}{6} = 2 - \frac{1}{6} = \frac{12}{6} - \frac{1}{6} = \frac{11}{6} \frac{2}{15} - 65 - \frac{4}{39} = \frac{2 \times 13}{15 \times 13} - \frac{65 \times 195}{195} - \frac{4 \times 5}{39 \times 5} = \frac{26}{195} - \frac{12675}{195} - \frac{20}{195} = \frac{- 12669}{195} = \frac{- 4223}{65}$

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Answer 3

ta có:

$\frac{4}{3} + \frac{1}{6} = \frac{4 \times 2}{3 \times 2} + \frac{1}{6} = \frac{8}{6} + \frac{1}{6} = \frac{9}{6} = \frac{3}{2} \frac{4}{15} + \frac{3}{10} = \frac{4 \times 2}{15 \times 2} + \frac{3 \times 3}{10 \times 3} = \frac{8}{30} + \frac{9}{30} = \frac{17}{30} \frac{4}{15} - \frac{3}{25} = \frac{4 \times 5}{15 \times 5} - \frac{3 \times 3}{25 \times 3} = \frac{20}{75} - \frac{9}{75} = \frac{11}{75} \frac{5}{4} + \frac{3}{4} - \frac{1}{6} = \frac{8}{4} - \frac{1}{6} = 2 - \frac{1}{6} = \frac{12}{6} - \frac{1}{6} = \frac{11}{6} \frac{2}{15} - 65 - \frac{4}{39} = \frac{2 \times 13}{15 \times 13} - \frac{65 \times 195}{195} - \frac{4 \times 5}{39 \times 5} = \frac{26}{195} - \frac{12675}{195} - \frac{20}{195} = \frac{- 12669}{195} = \frac{- 4223}{65}$

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