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21 April, 02:10

7x + 2y = 17

(3x + 2y = 3)

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Answers (1)
  1. 21 April, 02:59
    0
    Step-by-step explanation:

    Multiply second equation by - 1

    -1 * (3x + 2y) = 3

    -3x - 3y = - 3 now add this to the first equation

    7x + 2y = 17

    (-3x-2y) = - 3

    7x + 2y - 3x - 2y = 17 - 3 (2y will eliminate - 2y)

    4x = 14

    x = 7/2 now by using this information we found we can calculate the value for y

    if 3x + 2y = 3 (replace x by 7/2)

    3 * (7/2) + 2y = 3 ➡ 21/3 + 2y = 3 ➡ 2y = 3 - 21/3 ➡ 2ty = 15/2 ➡ y = 15/4
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