Math

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Solve:
3x + 7y + 5= 0
4x - 3y - 8 = 0

Find p; if:
px + y - 1= 0

  • Math -

    3x+7y=-5 (i)
    4x-3y=8 (ii)

    (i)x 4:
    12x+28y=-20 (iii)

    (ii)x 3:

    12x-9y=24 (iv)

    (iv)-(iii):
    -37y=44
    y=-44/37

    subs y into (i):
    3x+7(-44/37)=-5
    3x= -5+308/37
    x=148/37

  • Math - fix -

    3x = -185/37 + 308/37 = 123/37
    x = 41/37

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