已知a/1+b/1=3,求2a-3ab+2b/3a+2ab+3b的值
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已知a/1+b/1=3,求2a-3ab+2b/3a+2ab+3b的值
2a-3ab+2b/3a+2ab+3b怎么化简?
2a-3ab+2b/3a+2ab+3b怎么化简?
![已知a/1+b/1=3,求2a-3ab+2b/3a+2ab+3b的值](/uploads/image/z/4639866-42-6.jpg?t=%E5%B7%B2%E7%9F%A5a%2F1%2Bb%2F1%3D3%2C%E6%B1%822a-3ab%2B2b%2F3a%2B2ab%2B3b%E7%9A%84%E5%80%BC)
因为a/1+b/1=3 两边同乘ab得a+b=3ab
(2a-3ab+2b)/(3a+2ab+3b)=(2a+2b-3ab)/(3a+3b+2ab)=(6ab-3ab)/(9ab+2ab)=3/11
(2a-3ab+2b)/(3a+2ab+3b)=(2a+2b-3ab)/(3a+3b+2ab)=(6ab-3ab)/(9ab+2ab)=3/11
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