Answer:
Option (2).x = -8
Explanation:
Given system of equations to create the opposite terms of y-variable is,
→
------(1)
→ 18x + 3y = -288 ---------(2)
By adding both the equations (1) and (2)
(x - 3y) + (18x + 3y) = 136 - 288
(x + 18x) + (-3y + 3y) = -152
19x = -152
x = -
x = -8
Therefore, value of x = -8.
Option (2) will be the answer.