Solve The Following System Of Equations Using Elimination., 5x+Y=24, -5x-4y=-56, Solve For Y: , Solve For X:

Solve the following system of equations using elimination.

5x+y=24
-5x-4y=-56

Solve for y:
Solve for x:

Answer:

The value of x = 8/3 and y = 32/3.

Step-by-step explanation:

  5x + y = 24       ->                 5x + y = 24      

-5x - 4y = -56      ->        +     -5x - 4y = -56

                                                     -3y = - 32

- 3y = - 32

- 3y = - 32

- 3      -3

y = 32/ 3

In finding the value of x, you can use any of the two equation and substitute the value of x.

5x + y = 24

5x + 32/3 = 24

5x = 24 - 32/ 3

5x  = 72  - 32        (find the LCD)

        3       3

5x = 40/3

5x = 40/3          (division property of equality)

5       5

x = 40 (1)

     3(5)

x = 40/15     (they are both divisible by 5)

x = 8/ 3

To check, whether you get the correct value of your x and y. Lets substitute the value of x and y to the two given equations.

x = 8/3 and y = 32/3

5x+y=24

5(8/3) + 32/3 = 24

40/3 + 32/3 = 24

72/3 = 24

24 = 24

-5x-4y=-56

- 5(8/3) - 4(32/3) = -56

-40/3 - 128/3 = - 56

-168/3 = -56

- 56 = -56

Therefore, the value of x = 8/3 and y = 32/3.


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