Question

5/12 x 28/15 + 7/3 là ra bao nhiêu

 

Answer 1

\(\dfrac{5}{12}\times\dfrac{28}{15}+\dfrac{7}{3}\)
\(=\dfrac{7}{9}+\dfrac{7}{3}\)
\(=\dfrac{7}{9}+\dfrac{21}{9}\)
\(=\dfrac{28}{9}\)

Answer 2

\(\dfrac{5}{12}.\dfrac{28}{15}+\dfrac{7}{3}=\dfrac{7}{9}+\dfrac{7}{3}=\dfrac{7}{9}+\dfrac{21}{9}\)

\(=\dfrac{28}{9}\)

Answer 3

\(\dfrac{5}{12}\times\dfrac{28}{15}+\dfrac{7}{3}\)

=\(\dfrac{5\times28}{12\times15}+\dfrac{7}{3}\)

=\(\dfrac{5\times7\times2\times2}{3\times2\times2\times5\times3}+\dfrac{7}{3}\)

=\(\dfrac{7}{3\times3}+\dfrac{7}{3}\)=\(\dfrac{7}{9}+\dfrac{7}{3}=\dfrac{7}{9}+\dfrac{21}{9}=\dfrac{28}{9}\)