(2o14+2o15+2o16+2017+2018)÷2016

2024-11-13 06:54:25
推荐回答(1个)
回答1:

3+3(x-1/2014)=4/5
30+30(x-1/2014)=24
30(x-1/2014)=-6
7+30(x-1/2014) = 7-6 = 1