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Andrew [12]
3 years ago
14

Find the solution of this system of equations. Separate the x- and y-values with a comma. x - 2y = 9 and x - y = 11

Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
7 0
We can solve the equation system using elimination and subtitution method.
First, eliminate x to find the value of y
x - 2y = 9
x -   y = 11
---------------- - (substract)
     -y = -2
      y = 2
The value of y is 2

Second, subtitute 2 as y in one of the equation
x - y = 11
x - 2 = 11
x = 11 + 2
x = 13

The solution
x, y = 13, 2
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Step-by-step explanation:

<em>The statements are shown below:</em>

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Haley wrote "-2" eight times, which is EVEN number of times, so the answer would be POSITIVE. But, Haley's answer is negative. Which is wrong. But "256" is right.

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