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8 April, 11:42

Solve for x and y. 2y-7x=-9 and 4x+6=y

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  1. 8 April, 12:02
    0
    2y-7x=-9

    Step1: Add - 2y to both sides

    -7x+2y+-2y=-9+2y

    -7x=-2y-9

    Step 2: Divide both sides by - 7

    -7x/7=-2y-9/7

    x = 2/7y+9/7

    (this is for the first equation)
  2. 8 April, 13:31
    0
    2y-7x=-9

    4x+6=y

    2 (4x+6) - 7x=-9

    8x-7x=-12-9

    x=-21

    y=4 (-21) + 6

    y=-84+6

    y=-78
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