〇十A二46,A十囗二63,〇十囗二91,〇二多少,A二多少,囗二多少,
问题描述:
〇十A二46,A十囗二63,〇十囗二91,〇二多少,A二多少,囗二多少,
答
∵〇十A=46 ①
A十囗=63 ②
② - ①得
囗 - 〇 = 17 ③
又∵〇+囗二91 ④
③,④组成方程组,解之得:囗 = 54 ,〇 =37
∴37+A=46
A=9