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Math Help - Subjecting a pronumeral

  1. #1
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    Subjecting a pronumeral

    Hey guys, don't fully understand how to change the subject of a pro numeral in a equation so I turned for you to help me.

    V = Mv/(M-m)

    Make "m" the subject.

    (Anywhere I can learn math tags?)
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  2. #2
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    Quote Originally Posted by ajay View Post
    Hey guys, don't fully understand how to change the subject of a pro numeral in a equation so I turned for you to help me.

    V = Mv/(M-m)

    Make "m" the subject.

    (Anywhere I can learn math tags?)
    To learn how to use the LaTeX code see here: http://www.mathhelpforum.com/math-he...-tutorial.html

    V = Mv/(M-m) multiply by (M - m) to get rid of the denominator:

    V(M-m)=Mv divide by V

    M - m=\dfrac{Mv}{V} subtract M

    -m = \dfrac{Mv}{V} - M multiply both sides by (-1) to change the sign of m:

    m = M-\dfrac{Mv}{V}

    m = \dfrac{MV - Mv}{V} ~\implies~\boxed{m = \dfrac{M(V - v)}{V}}
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