Solve the equations 4x -y 11 5x 2y 4 - WAEC Mathematics 1997 Question
Solve the equations: 4x -y = 11; 5x + 2y = 4.
A
x = 6, y = 13
B
x = -2, y = -3
C
x = -2, y = 3
D
x = 2, y = -3
correct option: d
4x - y = 11....(1) x 2 8x - 2y = 22....(3)
5x + 12y = 4....(2) x 1 5x + 2y = 4....(4)
add eqn (3) and (4)
13x = 26
x = 2
4(2) - y = 11 \(\implies\) y = 8 - 11
y = -3.
Please share this, thanks:
Add your answer
No responses