Question

Tính nhanh :

6/4 * 19/10 - 3/4 * 7/10 + 3/4 : 10/69

Answer 1

Kết quả = 

Answer 2

\(\frac{6}{4}\cdot\frac{19}{10}-\frac{3}{4}\cdot\frac{7}{10}+\frac{3}{4}:\frac{10}{69}=2^{ }_{ }\)\(\frac{15}{46}\)

Answer 3

2/15/46

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Answer 4

\(\frac{6}{4}\times\frac{19}{10}-\frac{3}{4}\times\frac{7}{10}+\frac{3}{4}:\frac{10}{69}=\frac{3}{4}\times2\times\frac{19}{10}-\frac{3}{4}\times\frac{7}{10}+\frac{3}{4}\times\frac{69}{10}=\frac{3}{4}\times\frac{38}{10}-\frac{3}{4}\times\frac{7}{10}+\frac{3}{4}\times\frac{69}{10}=\frac{3}{4}\times\left(\frac{38}{10}-\frac{7}{10}+\frac{69}{10}\right)=\frac{3}{4}\times10=\frac{15}{2}\)

Answer 5

6/4 * 19/10 - 3/4 * 7/10 + 3/4 : 10/69

= 3/4 * 2 * 19/10 - 3/4 * 7/10 +3/4 : 10/69

= 3/4 * 38/10 - 3/4 * 7/10 + 3/4 * 69/10

= 3/4 * ( 38/10 - 7/10 + 69/10 )

= 3/4 * 100/10

= 3/4 * 10

= 30/4