Answer:

Step-by-step explanation:
The sum of interior angles of a 5-sided polygon is 540 degrees.
We sum all the angles to get:
<M+<L+<N+<O+<P=540
90+90+(17x+4)+(18x+6)+(10x-10)=540
45x+180=540
45x=540-180
45x=360
x=8
N=18*8+6

 
        
             
        
        
        
Answer: x=1/8
Step-by-step explanation: 
Subtract 3 from both sides 
3+ 8x=4
8x=1
Divide by 8 on both sides 
x=1/8 
Hope this helped! :) 
 
        
             
        
        
        
7.407407407407407... (it repeats the 407) 
U just had to divide 400 by 54