解方程组x+y=15 (x+15%x+y+10%y)=17
问题描述:
解方程组x+y=15 (x+15%x+y+10%y)=17
答
x+y=15
x=15-y
(x+15%x+y+10%y)=17
1.15x+1.1y=17
115x+110y=1700
115(15-y)+110y=1700
1725-115y+110y=1700
5y=25
y=5
x=10