在()里填上运算符号或括号,使等式成立.1.1/4()1/4()1/4()1/4=1/8.2.1/4()1/4()1/4()1/4()1/4=1/8.

问题描述:

在()里填上运算符号或括号,使等式成立.
1.1/4()1/4()1/4()1/4=1/8.2.1/4()1/4()1/4()1/4()1/4=1/8.

l dont now

0.25-(0.25+0.25)*0.25=0.125
0.25+(0.25+0.25)*0.25-0.25=0.125
0.25就是1/4

1.1/4(×)1/4(+)1/4(×)1/4=1/8.
2.1/4(-)1/4(×)1/4(-)1/4(×)1/4=1/8.