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13 March, 00:18

How many solutions for

-2x+4y=-7

y=-1/2x+5

+5
Answers (1)
  1. 13 March, 04:00
    0
    1. - 2x + 4 * (-1/2x+5) = - 7

    2. - 2x - 2x + 20 = - 7

    3. - 4x = - 27

    4. x = 27/4

    5. y = - 1/2 * 27/4 + 5

    6. y = - 27/8 + 40/8

    7. y = 13/8
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