数学里change the subject of the following formulae into the let

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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)

数学里change the subject of the following formulae into the let change the following into questions or answers. Change the following sentences into plural form. Change the following into indirect questions. Change the following sentences into special questions Change the following sentences into passive voice. Change the clause in each of the following sentences into a Change the following sentences into the present perfect pass Change the following sentences Underline the Subject in each of the following sentences and change the following words into two sentences with punctatio change the following sentences into negative forms. 1you mus