If 2x + 3y = 1 and x – 2y = 11, find (x + y)
-
A.
5 -
B.
-3 -
C.
8 -
D.
2 -
E.
-2
Correct Answer: Option D
Explanation
2x + 3y = 1 x 2…….(i)
x – 2y = 11 x 3…….(ii)
4x + 6y = 2……..(iii)
3x – 6Y = 33……..(4)
7x = 35
x = 5
Subt. for x
10 + 3y = 1
3y = -9
y = -3
x + y = 5 + -3
5 – 3 = 2