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8 April, 20:42

By what factor would you need to multiply the first and second equations to eliminate x? By what factor would you need to multiply the second and third equations to eliminate x?

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  1. 8 April, 21:12
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    Equation 1 : x + y + z = 3.25

    equation 2 : 12x + 2y + z = 9.50

    equation 3 : 2x + 4y + 5z = ?

    u would multiply equation 1 by - 12 ... take that result and add it to equation 2 ... this eliminates x.

    u would multiply equation 3 by - 6 ... take that result and add it to equation 2 ... this eliminates x
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