Question

Rút gọn rồi tính:

⁵/⁷-³/¹⁷=

⁵/⁷-⁴/¹⁷=

¹³/⁵-³⁵/²⁵=

Answer 1

\(\dfrac{5}{7}-\dfrac{3}{17}\\ =\dfrac{85}{119}-\dfrac{21}{119}\\ =\dfrac{64}{119}\\ \dfrac{5}{7}-\dfrac{4}{17}\\ =\dfrac{85}{119}-\dfrac{28}{119}\\ =\dfrac{57}{119}\\ \dfrac{13}{5}-\dfrac{35}{25}\\ =\dfrac{13}{5}-\dfrac{7}{5}\\ =\dfrac{6}{5}\)

Answer 2

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