知a+a+a+b+b=54,a+a+b+b+b=56,那么a,b的值各是多少急及急································
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![知a+a+a+b+b=54,a+a+b+b+b=56,那么a,b的值各是多少急及急································](/uploads/image/z/347493-21-3.jpg?t=%E7%9F%A5a%2Ba%2Ba%2Bb%2Bb%3D54%2Ca%2Ba%2Bb%2Bb%2Bb%3D56%2C%E9%82%A3%E4%B9%88a%2Cb%E7%9A%84%E5%80%BC%E5%90%84%E6%98%AF%E5%A4%9A%E5%B0%91%E6%80%A5%E5%8F%8A%E6%80%A5%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7)
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知a+a+a+b+b=54,a+a+b+b+b=56,那么a,b的值各是多少急及急································
知a+a+a+b+b=54,a+a+b+b+b=56,那么a,b的值各是多少
急及急································
知a+a+a+b+b=54,a+a+b+b+b=56,那么a,b的值各是多少急及急································
3a+2b=54 (1)
2a+3b=56 (2)
(1)+(2)
5a+5b=110
3a+3b=66 (3)
(3)-(2)
a=10
(3)-(1)
b=12
a=10 b=12
3a+2b=54,2a+3b=56
a=10,b=12
a=10 b=12
(a+b).(a-b)
a/b-b/a
a+b>a-b,
a-b>a,a+b
A-B=A/B
A+A+A+B+B=54,A+A+B+B+B=56,则A=?,B=?
A+A+A+B+B=54,A+A+B+B+B=56,A=( )B=( )
a+a+a+b+b=54,a+a+b+b+b=56,那么a=?,b=?
A+A+A+B+B=54 B+B+B++A+A=56 问A和B各是多少
已知a+a+b+b+b=56,a+a+a+b+b=54,求a,b得值
a+a+a+b+b+=54 a+a+b+b+b=56求a和 b的值
A+A+A+B+B+=23,B+B+A+A+A+A+A=33,A=?,B=?
A*b/a>A ,那么a/b
-2a(a+b)+b(a+b)
化简|a|+|-b|-|a-b|-|a+b|
化简 |b|-|a|+|a-b|+|a+b|
[(a+b)(a-b)-(a-b)
(a+b)(a-b)-a-b因式分解