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Math Help - multiplying an equation

  1. #1
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    multiplying an equation

    r/-5=10

    s/6=54

    -30=t/20
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by dianna View Post
    r/-5=10

    s/6=54

    -30=t/20
    As always, we wish to get the variable by itself:
    \frac{s}{6} = 54

    6 \cdot \frac{s}{6} = 6 \cdot 54

    s = 324

    =============================

    -30 = \frac{t}{20}

    20 \cdot (-30) = 20 \cdot \frac{t}{20}

    -60 = t

    -Dan
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  3. #3
    Forum Admin topsquark's Avatar
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    Whoops! Missed one.

    \frac{r}{-5} = 10

    (-5) \cdot \frac{r}{-5} = (-5) \cdot 10

    r = -50

    -Dan
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