题目内容
(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+5.61+6.6)×(2.17+5.61).
答案:20.79
解析:
解析:
|
设A=2.17+5.61 B=2.17+5.61+6.6,答案为20.79. |
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题目内容
(3.15+2.17+5.61)×(2.17+5.61+6.6)-(3.15+2.17+5.61+6.6)×(2.17+5.61).
|
设A=2.17+5.61 B=2.17+5.61+6.6,答案为20.79. |