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11 September, 03:11

1. solve for x and y

2x-y=1

2x+2y=10

+4
Answers (1)
  1. 11 September, 03:28
    0
    (2, 3)

    Step-by-step explanation:

    Given the 2 equations

    2x - y = 1 → (1)

    2x + 2y = 10 → (2)

    Subtract (2) from (1) term by term to eliminate x

    2x - 2x - y - 2y = 1 - 10, that is

    - 3y = - 9 (divide both sides by - 3)

    y = 3

    Substitute y = 3 into either (1) or (2) for corresponding value of x

    Substituting in (2)

    2x + 2 (3) = 10

    2x + 6 = 10 (subtract 6 from both sides)

    2x = 4 (divide both sides by 2)

    x = 2

    Solution is (2, 3)
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