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23 October, 14:06

Solve each system using elimunation

x + y = 2

x - y = 4

+4
Answers (1)
  1. 23 October, 14:52
    0
    solution is (3, - 1)

    Step-by-step explanation:

    given the 2 equations

    x + y = 2 → (1)

    x - y = 4 → (2)

    Adding the 2 equations term by term will eliminate the y-term

    (x + x) + (y - y) = (2 + 4)

    2x = 6 (divide both sides by 2)

    x = 3

    substitute x = 3 in either (1) or (2) for y

    (1) → 3 + y = 2 (subtract 3 from both sides)

    y = 2 - 3 = - 1

    solution is (3, - 1)
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