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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