(1+6%)x+(12200-x)*(1-5%)-12200=5 x=?
问题描述:
(1+6%)x+(12200-x)*(1-5%)-12200=5 x=?
答
(1+6%)x+(12200-x)*(1-5%)-12200=5
1.06x+12200*0.95-0.95x-122200=5
0.11x=5+12200*0.05
0.11x=615
x=5590.91