3x-y-3=0;4x-y-8=0 by elimination method
Answers
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Answer:
x = 5 and y = 12
Step-by-step explanation:
In the elimination method, you have to write down both the equations, one below the other, like this:
3x - y - 3 = 0
4x - y - 8 = 0
Now, you have to subtract the equations:
3x - y - 3 = 0
- 4x - y - 8 = 0
----------------------
-x + 0y + 5 = 0
So,
The answer is -x + 0 + 5 = 0
=> -x + 5 = 0
=> -x = -5
=> x = 5
Given in the question,
3x - y - 3 = 0
Since we now know that x = 5, we can substitute the value of x in the above equation.
3x - y - 3 = 0
3(5) - y - 3 = 0
15 - y - 3 = 0
(15 - 3) - y = 0
12 - y = 0
- y = - 12
y = 12
Therefore, x = 5, and y = 12