A+B=33
E+A=72
兩式相加：
2A+E+B=33+72=105
又有：E+B=73代入：
2A+73=105
A=16
B=33-A=17
C=95-17=78
D=87-16=71
E=73-17=56
算年齡的：A+B=33 B+C=95 E+A=72 A+D=87 E+B=73 求 ABCDE各年齡多少
算年齡的：A+B=33 B+C=95 E+A=72 A+D=87 E+B=73 求 ABCDE各年齡多少
數(shù)學(xué)人氣：460 ℃時(shí)間：2020-06-23 03:02:05
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