Math(can you just check my answer please)
posted by Sofie .
Lines x and y intersect to form angles 1,2,3, and 4. The measure of angle 3 is (3x  9) and angle 4 is 111 degrees.
Can you help me make a equation
I think the equation is 3x9 + 11 = 180
is this correct

Implied in the question is that angles 1,2,3,4 are in either clockwise or counterclockwise order.
If that is true, then angles 3 and 4 are adjacent and supplementary (add up to 180°).
The proposed equation is correct if the two angles are adjacent:
3x9 + 111 = 180
(note correction in typo). 
¡çLMN and ¡çNMO are adjacent angles that share MN
ƒåƒåƒåƒåƒâ
as a side. Together, those two angles form ¡çLMO.
What equation can you write that shows the relationship between m¡çLMN , m¡çNMO , and m¡çLMO