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Soni-kay

  • 3 years ago

6x + 6y + 3z=494 3x + 3y + 3z= 250 in the system of equations above, what is the value of 9x+9y

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  1. Jonask
    • 3 years ago
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    subtract the equations from each other\[\huge {(1)-(2)}\]

  2. Soni-kay
    • 3 years ago
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    ty

  3. Jonask
    • 3 years ago
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    3x+3y=494-250 then multiply by 3

  4. Soni-kay
    • 3 years ago
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    why 3

  5. Jonask
    • 3 years ago
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    so that we have 3*3=9 9x+9y=3(494-250)

  6. Soni-kay
    • 3 years ago
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    k

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