math

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1)
x+8y=33
-x+4y=3
I need help solving this one using the elimination method!

  • math -

    x+8y=33 ---- (1)
    -x+4y=3 ---- (2)

    (1) + (2),
    x + 8y + (-x + 4y) = 33 + 3
    12y = 36
    y = 3

    sub y = 3 into (2),
    -x + 4(3) = 3
    -x = 3 - 12
    -x = -9
    x = 9

    CHECK: sub x = 9 and y = 3 into (1),
    9 + 8(3) = 33

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