Answer:
x = 38 and m∠M = 98 
Explanation:
Angles in any triangle will always add up to 180 : 
So angle O + Angle N + Angle M = 180
(x+6)+(3x-16)+(x) = 180 
Simplify: 
5x-10 = 180 
Add 10 to both sides : 
5x = 190 
Divide both sides by 5 : 
x = 38 
Angle M will therefore 
= 3(38) - 16 
= 114 - 16 
= 98 
Hope this helped and have a good day