Question

tính bằng cách hợp lý:5/8x4+5/8x4/5 giúp tui câu này nha

đang cần gấp

 

Answer 1

\(\dfrac{5}{8}\) x 4 + \(\dfrac{5}{8}\) x \(\dfrac{4}{5}\)

= \(\dfrac{5}{8}\) x (\(4\) + \(\dfrac{4}{5}\) )

= \(\dfrac{5}{8}\) x \(\dfrac{24}{5}\) = 3

Answer 2

\(\dfrac{5}{8}\times4+\dfrac{5}{8}\times\dfrac{4}{5}\)
\(=\dfrac{5}{8}\times\left(4+\dfrac{4}{5}\right)\)
\(=\dfrac{5}{8}\times\dfrac{24}{5}\)
\(=\dfrac{24}{8}\)
\(=3\)

Answer 3

5/8 * 4 + 5/8 * 4/5 

= 5/8 * (4+4/5)

= 5/8 * 24/5

= 3