10Y+X-(10X+Y)=36这个方程怎么解?
问题描述：
10Y+X-(10X+Y)=36这个方程怎么解?
答
10Y+X-10X-Y=36
9Y-9X=36
9（Y-X）=36
Y-X=4
答
去掉括号得到，10Y+X-10X-Y=36 推出 10Y-10X+X-Y=36，9Y-9X=36，Y-X=4.
答
10y+x-10x-y=36
9y-9x=36
y-x=4
y=x+4