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18 October, 13:14

Find the value of y when x equals 4, - 3x+9y=-57

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Answers (2)
  1. 18 October, 13:45
    0
    -12 + 9y = - 57

    add 12 to both sides, 9y = - 45

    divide 9 from both sides to isolate the y

    y = - 5
  2. 18 October, 14:56
    0
    -3 (4) + 9y=-57

    -12+9y=-57

    9y=-45

    y=-5
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