Answer:
Option (3)
Explanation:
Given: EF = 10x + 20
FG = 43
EG = 183
From the figure attached,
Length of segment EF + length of segment FG = length of segment EG
By substituting the values of each segment in the equation,
(10x + 20) + 43 = 183
10x + 20 = 183 - 43
10x = 140 - 20
x =

x = 12
Therefore, x = 12 will be the answer.
Option (3) will be the correct option.