19.8乘以x等于y.19.8减y等于15.84 x和y等于多少?
问题描述:
19.8乘以x等于y.19.8减y等于15.84 x和y等于多少?
答
19.8*X=Y 19.8-Y=15.84
Y=19.8-15.84=3.96
X=Y/19.8=3.96/19.8=0.2
答
y=19.8-15.84=3.96
x=y除以19.8=0.2