1 2 3 = 1 1 2 3 4 5 6 = 1 1 2 3 4 5 6 7 = 1 填上加,减,乘,除,括号让算式等于1
问题描述:
1 2 3 = 1 1 2 3 4 5 6 = 1 1 2 3 4 5 6 7 = 1 填上加,减,乘,除,括号让算式等于1
答
(1+2)/3=(1+1+2+3+4-5)/6=1-1+2+3+4+5-6-7=1
(1+2)/3=1/1+2+3-4+5-6=1/1*(2+3)+4+5-6-7=1