algebra 1

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Solve the following systems of linear equations using algebraic method.
1)3y=11-2x
3x=y-11

2)8x-6y=14
12x-9y=18

  • algebra 1 -

    1). 3y=11-2x
    2). 3x=y-11

    Using equation 1: y = (11-2x)/3
    Substituting into equation 2

    3x = (11-2x)/3 - 11
    x = (11 -2x)/9 - 11/3
    x + 2x/9 = 11/9 - 11/3
    11x/9 = 11/9 - 11/3
    solve for x

    Then plug x into either equation 1 or 2, and solve for y

    2) Use a similar procedure, as shown in problem 1

  • algebra 1 -

    X+12+x<44

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