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12 February, 13:31

What is 4x+3y = - 5 and - 3x+4y=12 in elimination?

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Answers (2)
  1. 12 February, 14:59
    0
    Step-by-step explanation:

    4x+3y=-5 ... (1)

    -3x+4y=12 ... (2)

    By 3 (1) + 4 (2) gives

    12 x+9y-12x+16y=-15+48

    25y=33

    y=33/25=1.32

    from (1)

    4x+3 (33/25) = -5

    4x=-5-99/25 = (-125-99) / 25=-224/25

    x=-224/100=-2.24
  2. 12 February, 16:29
    0
    4x+3y=-5 answer 4x+34+5=0 - 3x+4y=12 answer 3x-4y+12=0
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