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    Hoddi's Avatar
    Hoddi Posts: 5, Reputation: 1
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    #1

    Mar 3, 2010, 04:18 AM
    solve the following system of equations for z only using cramers rule
    2x=3y=-8 3z-y=-7 x+2z=-7
    this question says solve the following system of equations for z only using cramers rule.
    now all the examples I have, have 3 terms eg: 2x+3y-z=7 in all three the equations now this question has only two terms. How would you go abought getting the column for this?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Mar 3, 2010, 05:12 AM

    Cramer's rule: Cramer's rule - Wikipedia, the free encyclopedia

    Your least eqn x+2z=-7 can be written as

    1x + 0y + 2z = -7

    It should now be obvious.
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