Answer:
Step-by-step explanation:
The angles given are along a straight line, which is 180 degrees.
One angle is 93 degrees.
180 - 93 = 87.
The other angle must be 87 degrees.
87 = 3x + 18
-18 -18
69 = 3x
÷3 ÷3
23 = x
Hope this helps.
Answer: 23
[tex]93+3x+18=180\\\\111+3x=180\\\\3x=69\\\\x=23[/tex]
