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31 January, 09:24

X - y = 4

x + y = 2

What is the solution of the system?

(3, - 1)

(3, 1)

(-1, 3)

+1
Answers (1)
  1. 31 January, 11:43
    0
    X=3, Y=-1

    Step-by-step explanation:

    This question is based on elimination method

    X-Y=4 ... (1)

    X+Y=2 ... (2)

    Add (1) and (2)

    2x=6

    Make x the subject of formula by dividing both sides by 2

    X=3

    Let's substitute the value of x into (1)

    3-Y=4

    Substrate 3 from both sides

    -Y=1

    Divide both sides by-

    Y=-1

    Therefore x is 3 and Y is - 1
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