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2 July, 02:48

Complete the solution of the equation. find the value of y when x equals 4 - 3x + 9y = - 57

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  1. 2 July, 04:47
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    y = - 5

    Step-by-step explanation:

    -3x + 9y = - 57

    Let x = 4

    -3*4 + 9y = - 57

    -12 + 9y = - 57

    Add 12 to each side

    -12+12 + 9y = - 57+12

    9y = - 45

    Divide each side by 9

    9y/9 = - 45/9

    y = - 5
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