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4 January, 10:06

Linear Combination (Show all work and write steps.)

2x - 3y = 13

x + 2y = - 4

+3
Answers (1)
  1. 4 January, 13:18
    0
    2x-3y=13 Equation 1

    x+2y=-4 Equation 2

    Solving by substitution method.

    Isolate x from equation 2.

    x=-2y-4

    Substitute value of x in equation 1.

    2 (-2y-4) - 3y=13

    -4y-8-3y=13

    -7y-8=13

    -7y=21

    y=-3

    Now substitute value of y in x=-2y-4

    x=-2 (-3) - 4

    x=6-4

    x=2

    Answer: (x, y) = (2,-3)
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