用2,-4,12,1这4结果等于24,怎样计算?
问题描述:
用2,-4,12,1这4结果等于24,怎样计算?
答
(12-4)乘以(1+2)
答
(12+(-4))*(2+1)=24
答
(12-4)*(2+1)
答
(12-4)(1+2)
答
(2+1)*[12+(-4)]=24