括号二分之一加三分之一加四分之一括号乘以十二等于多少

Question

如题所述

Answer 1

原式=(1/2+1/3+1/4)×12
=1/2×12+1/3×12+1/4×12
=6+4+3=13
请采纳一下

Answer 2

6+4+3

Answer 3

(1/2+1/3+1/4)×12=1/2×12+1/3×12+1/4×12=6+4+3=13