数学里change the subject of the following formulae into the letter in the square brackets

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数学里change the subject of the following formulae into the letter in the square brackets
数学里change the subject of the following formulae into the letter in the square brackets

数学里change the subject of the following formulae into the letter in the square brackets
这里涉及数学中的主项变换,可译为：将下列公式中的主项转换为方括号中的字母.
例如,
P=q(r-1)+2r [r]

即r=?
解:
P=qr-q+2r*r
P+q=qr+2r*r
P+q=r(q+2r)
(P+q)/(q+2r)=r
转换主项 r=(P+q)/(q+2r)

将下面公式中对应的项变成小括号中的字母。

翻译：将下列公式中的项目变换成方括号内的字母。

要学着问问题。这样的问题如果给一个实际的题目，人家帮你解一题就一目了然了

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