12/5X35/9X9/2等于?(递等式) 5/4-5/4X7/2等于?(递等式) 9/2X8/5X18X35/2等于?(递等式) (26/1+39/2)X1

问题描述:

12/5X35/9X9/2等于?(递等式) 5/4-5/4X7/2等于?(递等式) 9/2X8/5X18X35/2等于?(递等式) (26/1+39/2)X1

12/5X35/9X9/2=30
5/4-5/4X7/2=-25/8
9/2X8/5X18X35/2=2268
(26/1+39/2)X1=45.5