\(\dfrac{9}{14}\times13+\dfrac{9}{14}\)
\(=\dfrac{9}{14}\times13+\dfrac{9}{14}\times1\)
\(=\dfrac{9}{14}\times\left(13+1\right)\)
\(=\dfrac{9}{14}\times14\)
\(=\dfrac{126}{14}\) \(=9\)
Đúng 2
Bình luận (0)
\(2023\times0,8+2023\times9,2\)
\(=2023\times\left(0,8+9,2\right)\)
\(=2023\times10\)
\(=20230\)
Đúng 1
Bình luận (0)
\(\dfrac{9}{14}\times13+\dfrac{9}{14}\)
\(=\dfrac{117}{182}+\dfrac{9}{14}\)
\(=\dfrac{9}{7}\)
\(2023\times0,8+2023\times9,2\)
\(=2023\times\left(0,8+9,2\right)\)
\(=2023\times10\)
=\(20230\)
Đúng 0
Bình luận (0)
