(100a+10b+c)-(100b+10a+c)=270怎么解方程啊
问题描述:
(100a+10b+c)-(100b+10a+c)=270怎么解方程啊
答
(100a+10b+c)-(100b+10a+c)=270
90a-90b=270
a-b=3