Answer:
126
Step-by-step explanation:
Angle SRW is supplementary to (2x + 18)º and (3x)º, that is, they add up to 180º.
Finding angles in function of X:
Since angles (2x + 18)º and (3x)º are opposite by vertex R, they have the same measure. So
[tex]3x = 2x + 18[/tex]
[tex]x = 18[/tex]
So
[tex]3x = 3(18) = 54[/tex]
Angle SRW:
Supplementary with 54. So
54 + SRW = 180
SRW = 180 - 54 = 126
So 126 is the answer.
