3 x 12 x 7/22 x 9 x 14 = 15876/11 = 1447,272727273
A) 3 x 12 x \(\dfrac{7}{22}\) x 9 x 14 = \(36\cdot\dfrac{7}{22}\cdot126=4536\cdot\dfrac{7}{22}=\dfrac{31752}{22}\)
3 nhân 12 nhân 7/ 22 nhân 9 nhân 14
= 3 x 12 x 7/22 x 9 x 14
= \(\dfrac{3\times12\times7\times9}{22}\)
\(=\dfrac{1134}{11}\)