\(5\dfrac{1}{4}\times1\dfrac{3}{37}=\dfrac{21}{4}\times\dfrac{40}{37}=\dfrac{21\times40}{4\times37}=\dfrac{840}{148}=>D\)
5 1/4 x 1 3/37 = 21/4 x 40/37 = 840/148
=> Đ/án là D
\(5\dfrac{1}{4}x1\dfrac{3}{37}=\dfrac{21}{4}x\dfrac{40}{37}=\dfrac{210}{37}\)
\(\dfrac{210}{37}=5\dfrac{25}{37}\)
mà\(\dfrac{840}{148}=5\dfrac{25}{37}\)
suy ra đáp án là D