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22 January, 19:08

What is the solution to this linear equation?

y-4x=7

2y+4x=2

+4
Answers (1)
  1. 22 January, 19:29
    0
    You can solve for y in the first equation

    y = 4x + 7

    Plug 4x + 7 instead of y in the second equation

    2 (4x + 7) + 4x = 2

    Solve for x

    x = - 1

    Plug - 1 for x

    y - 4 * - 1 = 7

    y = 3

    Solution: (-1, 3)
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