X-Y=Z X+Y+Z=80已知Y等于10求X和Z
问题描述:
X-Y=Z X+Y+Z=80已知Y等于10求X和Z
答
X-Z=10
X+Z=70
X=40
Z=30
X-Y=Z X+Y+Z=80已知Y等于10求X和Z
X-Z=10
X+Z=70
X=40
Z=30