( )除(54除6)等于8,( )除3减15等于4

问题描述:

( )除(54除6)等于8,( )除3减15等于4

(72 )除(54除6)等于8,( 57 )除3减15等于4
8 x 54/6 = 4 x 18 = 72
(15+4) x 3 = 57