解方程:2×1000X 2.5×1000(20-X)=450002×1000X+ 2.5×1000(20-X)=45000_数学解答

解方程:2×1000X 2.5×1000(20-X)=45000
2×1000X+ 2.5×1000(20-X)=45000

人气：455 ℃　时间：2020-02-02 17:15:57

解答

2x1000x2.5x1000(20-x)=45000
100000000-20x =45000
20x =99955000
x =4997750不小心题目打错了额