3x+y=5 2x-2y=-2 elimination
Mathematics · High School · Wed Jan 13 2021
llm
Answered on
We have,
3x+y=5 …1
2x-2y=-2 …2
Multiplying equation 1 by 2 and equation 2 by 1, we get
6x + 2y = 10 …3
and, 2x - 2y = -2 …4
Adding equation 3 and 4, we get
6x + 2y + 2x - 2y = 10 - 2
8x = 8
x = 8/8
x = 1
Now, putting value of x in equation 1, we get
3(1) + y = 5
y = 5 - 3
y = 2
Thus, value of x and y are 1 and 2 respectively.