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Solve the system using substitution or elimination and describe your steps. Be sure to verify your solution. • x = y - 3 2x + y = 12

  • choixongdong: x = y - 3
    2x + y = 12

    substitute 
    x = y - 3  into 2x + y = 12
    2x + y = 12
    2(y - 3 )+ y = 12
    2y - 6 + y = 12
    3y - 6 = 12
    3y = 18
     y = 6

    substitute y = 6 into x = y - 3 to find x
    x = y - 3
    x = 6 - 3
    x = 3

    answer
    x = 3 and y = 6

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