Mrobert10 Mrobert10

11-05-2015
Mathematics

contestada

Solve the following system. Verify the solution.
y = 4x – 11
x = 2y – 13

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Panoyin Panoyin

11-05-2015

y = 4x - 11
x = 2y - 13

    x = 2(4x - 11)- 13
    x = 2(4x) - 2(11) - 13
    x = 8x - 22 - 13
    x = 8x - 35
- 8x - 8x
-7x = -35
-7    -7
   x = 5
y = 4x - 11
y = 4(5) - 11
y = 20 - 11
y = 9
(x, y) = (5, 9)

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