11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%解方程,急_数学解答

11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%解方程,急

人气：417 ℃　时间：2020-02-15 08:52:14

解答

11× 38.5% = X × 36% + (X - 3)× 35% +(11-2X+3)×40%
4.235=0.36x+0.35x-1.05+4.4-0.8x+1.2
-0.09x=4.235+1.05-4.4-1.2
-0.09x=-0.135
x=1.5你有一个地方算错啦不过还是谢谢你哦^-^