Question

Đã trả lời bởi chuyên gia

Answer 1

a)

$M S C = 2 \times 3 = 6 \frac{3}{2} = \frac{3 \times 3}{2 \times 3} = \frac{9}{6} \frac{4}{3} = \frac{4 \times 2}{3 \times 2} = \frac{8}{6} b) 10 = 2 \times 5 \Rightarrow M S C = 10 \frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10} c) 4 = 2 \times 2 M S C = 2 \times 2 \times 5 = 20 \frac{7}{4} = \frac{7 \times 5}{4 \times 5} = \frac{35}{20} \frac{2}{5} = \frac{2 \times 4}{5 \times 4} = \frac{8}{20} \frac{5}{2} = \frac{5 \times 10}{2 \times 10} = \frac{50}{20} d) 6 = 2 \times 3 8 = 2 \times 4 9 = 3 \times 3 M S C = 2 \times 3 \times 3 \times 4 = 72 \frac{5}{6} = \frac{5 \times 12}{6 \times 12} = \frac{60}{72} \frac{2}{8} = \frac{2 \times 9}{8 \times 9} = \frac{18}{72} \frac{4}{9} = \frac{4 \times 8}{9 \times 8} = \frac{32}{72} e) \frac{2}{8} = \frac{1 \times 2}{2 \times 4} = \frac{1}{4} M S C = 4 \times 3 = 12 1 = \frac{12}{12} \frac{2}{3} = \frac{2 \times 4}{3 \times 4} = \frac{8}{12} \frac{5}{4} = \frac{5 \times 3}{4 \times 3} = \frac{15}{12} \frac{2}{8} = \frac{1}{4} = \frac{1 \times 3}{4 \times 3} = \frac{3}{12}$

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Answer 2

a)

$M S C = 2 \times 3 = 6 \frac{3}{2} = \frac{3 \times 3}{2 \times 3} = \frac{9}{6} \frac{4}{3} = \frac{4 \times 2}{3 \times 2} = \frac{8}{6} b) 10 = 2 \times 5 \Rightarrow M S C = 10 \frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10} c) 4 = 2 \times 2 M S C = 2 \times 2 \times 5 = 20 \frac{7}{4} = \frac{7 \times 5}{4 \times 5} = \frac{35}{20} \frac{2}{5} = \frac{2 \times 4}{5 \times 4} = \frac{8}{20} \frac{5}{2} = \frac{5 \times 10}{2 \times 10} = \frac{50}{20} d) 6 = 2 \times 3 8 = 2 \times 4 9 = 3 \times 3 M S C = 2 \times 3 \times 3 \times 4 = 72 \frac{5}{6} = \frac{5 \times 12}{6 \times 12} = \frac{60}{72} \frac{2}{8} = \frac{2 \times 9}{8 \times 9} = \frac{18}{72} \frac{4}{9} = \frac{4 \times 8}{9 \times 8} = \frac{32}{72} e) \frac{2}{8} = \frac{1 \times 2}{2 \times 4} = \frac{1}{4} M S C = 4 \times 3 = 12 1 = \frac{12}{12} \frac{2}{3} = \frac{2 \times 4}{3 \times 4} = \frac{8}{12} \frac{5}{4} = \frac{5 \times 3}{4 \times 3} = \frac{15}{12} \frac{2}{8} = \frac{1}{4} = \frac{1 \times 3}{4 \times 3} = \frac{3}{12}$

Answer 3

a) mẫu chung 6

b) mẫu chung 10

c) mẫu chung 20

d) mẫu chung 72

e) mẫu chung 24

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