dimple29
contestada

10x-11y=2
5x-4y=13
Find the value of x and y
please stop answering when there is already an answer in the answers section because i am saving up points for something
thanks!​

Respuesta :

mattwisey26
Question 1, X= 1/5+11y/10, Y=-2/11+10x/11

Question2, X=13/5+4y/5, Y=-13/4+5x/4

It’s hard to write fractions on here so a / is a fraction bar not divided by.
sqdancefan

9514 1404 393

Answer:

  (x, y) = (9, 8)

Step-by-step explanation:

You can eliminate the x-variable by subtracting twice the second equation from the first.

  (10x -11y) -2(5x -4y) = (2) -2(13)

  -3y = -24 . . . . . . collect terms

  y = 8 . . . . . . . . divide by -3

  5x -4(8) = 13 . . . substitute for y in the second equation

  5x = 45 . . . . . . . add 32

  x = 9 . . . . . . . . .divide by 5

The solution is x = 9, y = 8.

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