Solve the pair of linear equations x-y=2 and x+y=2 .also find p if p=2x+3
Answers
Answered by
61
The two equations are
x + y = 2
x - y = 2
Adding the two equations, we get 2x = 4 or x = 2.
Then, 2 + y = 2 or y = 0
So, if x = 2, then, substituting this in p = 2x + 3, we get
p = 2*2+3 = 4+3 = 7.
x + y = 2
x - y = 2
Adding the two equations, we get 2x = 4 or x = 2.
Then, 2 + y = 2 or y = 0
So, if x = 2, then, substituting this in p = 2x + 3, we get
p = 2*2+3 = 4+3 = 7.
Answered by
9
The two equations are
x + y = 2
x - y = 2
Adding the two equations, we get 2x = 4 or x = 2.
Then, 2 + y = 2 or y = 0
So, if x = 2, then, substituting this in p = 2x + 3, we get
p = 2*2+3 = 4+3 = 7.
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