Solve the following equations 4x – 3 = 3x + y = x – y = 3, 3x + y = 2y + 5x – 12
-
A.
x = 5, y = 2 -
B.
x = 2, y = 5 -
C.
x = 5, y = -2 -
D.
x = -2, y = -5 -
E.
x = -5, y = -2
Correct Answer: Option A
Explanation
4x – 3 = 3x + y = x – y = 3…….(i)
3x + y = 2y + 5x – 12………(ii)
eqn(ii) + eqn(i) 3x = 15
x = 5
substitute for x in equation (i)
5 – y = 3
y = 2