Question

Thực hiện phép tính:

\(\left(12,375-10,55\right):\left(\dfrac{7}{12}+6\dfrac{4}{15}\right)\)

Answer 1

\(\dfrac{73}{40}\): (\(\dfrac{7}{12}\)+\(\dfrac{94}{15}\))

= \(\dfrac{73}{40}\):(\(\dfrac{35}{60}\)+\(\dfrac{376}{60}\))

= \(\dfrac{73}{40}\):\(\dfrac{137}{20}\)

= \(\dfrac{73}{40}\). \(\dfrac{20}{137}\)

= \(\dfrac{73.20}{40.137}\)

= \(\dfrac{73}{274}\)

Answer 2

\(\left(12,375-10,55\right):\left(\dfrac{7}{12}+6\dfrac{4}{15}\right)\)

\(=1,825:\left(\dfrac{7}{12}+\dfrac{94}{15}\right)\)

\(=\dfrac{1825}{1000}:\left(\dfrac{7.5}{60}+\dfrac{94.4}{60}\right)\)

\(=\dfrac{73}{40}:\left(\dfrac{35+376}{60}\right)\)

\(=\dfrac{73}{40}:\dfrac{411}{60}\)

\(=\dfrac{73}{40}:\dfrac{137}{20}\)

\(=\dfrac{73}{40}.\dfrac{20}{137}\)

\(=\dfrac{73}{274}\)

Answer 3

\(\left(12,375-10,55\right):\left(\dfrac{7}{12}+6\dfrac{4}{15}\right)\\ =1,825:\left(\dfrac{7}{12}+\dfrac{94}{15}\right)\\ =\dfrac{73}{40}:\dfrac{137}{20}=\dfrac{73}{40}.\dfrac{20}{137}=\dfrac{73}{274}\)