Question

Tính Giá trị biểu thức5/6:7/9-1/10

Answer 1

5/6:7/9-1/10 = 15/14 - 1/10

                  = 34/35

Answer 2

\(=\frac{34}{35}\)

Answer 3

mình chả hểu!

Answer 4

34/35

Answer 5

\(\frac{5}{6}:\frac{7}{9}-\frac{1}{10}\)

\(=>\frac{5}{6}:\frac{7}{9}=\frac{5}{6}x\frac{9}{7}=\frac{45}{42}\)

\(=>\frac{45}{42}-\frac{1}{10}\)

\(=>\frac{45}{42}=\frac{225}{210};\frac{1}{10}=\frac{21}{210}\)

\(=>\frac{45}{42}-\frac{1}{10}=\frac{225}{210}-\frac{21}{210}=\frac{204}{210}\)

\(Vậy\frac{5}{6}:\frac{7}{9}-\frac{1}{10}=\frac{204}{210}\)

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