x+y+z=8.5;x+y=7.5;x+z=4.9
问题描述:
x+y+z=8.5;x+y=7.5;x+z=4.9
答
x=3.9
y=3.6
z=1
x+y+z=8.5;x+y=7.5;x+z=4.9
x=3.9
y=3.6
z=1