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sapphers

  • 3 years ago

How do I solve: -8x-8y=-16 6x-9y=-108 in a matrix? I REALLY NEED HELP!!!

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  1. morganalana17
    • 3 years ago
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    first you have to find the determanate

  2. morganalana17
    • 3 years ago
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    d= [ -8 -8] =-8(-9)-(-8)(6) = 72-(-48)= 120 [6 -9]

  3. sapphers
    • 3 years ago
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    I figured it out! Thank you :)

  4. morganalana17
    • 3 years ago
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    dx=[-16 -8]= -16(-9)-(-8)(-108)= 144-864= -720 [-108 -9]

  5. morganalana17
    • 3 years ago
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    ur welcome

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