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8 November, 17:32

What is the solution of the system of equations below?

2x+3y=7

x+y=4

+4
Answers (1)
  1. 8 November, 17:51
    0
    Answer: x=5, y=-1

    Step-by-step explanation:

    2x+3y=7, x+y=4

    For y:

    2x+3y=7 can be rewritten as 2 (x+y) + y=7

    substitute (x+y) for 4

    2 (4) + y=7

    8+y=7

    y=7-8

    y=-1

    For x:

    Plug in - 1 for y

    2x+3 (-1) = 7

    2x-3=7

    2x=7+3

    2x=10

    x=5

    x=5, y=-1
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