Question

12/5x15/7x24x7/5简便计算？

Answer 1

为了方便看，分数用括梁返号括起来。
12/5x15/7x24x7/5
=（12/5）x（3x5/7）x24x（7/5）
=（12/5）x（3x1/1）x24x（1/1）
=（卖渣码12/5）x3x24
=2.4x72
=2.4x（中哪70+2）
=168+4.8
=172.8

Answer 2

12/5×15/7×24×7/5
=（7/大困7）滚哗念×（15/5）×12×24/（5×5）
=1×3×12×24/25
=36×（芦昌25-1）/25
=36×25/25-36×1/25
=36-36/25
=36-1-11/25
=35-11/25
=34又25分之14

Answer 3

(12/5) x (15/7) x 24 x (7/隐桥5)
= (12/1) x (3/灶薯猛1) x 24 x (1/5)
= 36 x 24 x (1/手基5) = 864/5 =172.8