This is what i got: 
-x-20=6x+1
        
             
        
        
        
So the ratio of boys to girls is 12:24.. now, is that an equivalent ratio as 2 boys for 4 girls? or 2:4?  let's see.

you could start simplifying the 12/24 fraction by dividing by some common multiple, say 2, and get 6/12, then divide by 3 and get 2/4  and stop there.
then you'll notice that 12/24 is really 2/4 in disguise.
 
        
        
        
<O = 16 degrees   vertical angles are equal
<O + 4x+90 = 180   DC is a straight line
16 +4x +90 = 180
106 +4x = 180
4x =74
x =18.5
16 +90  +2y= 180   DC is a straight line
106+2y=180
2y = 74
y= 37
Answer : y=37
x=18.5
 
        
                    
             
        
        
        
Answer:
180 - 61 = 119
Step-by-step explanation:
So from A to D it is 180 degrees so just have to subtract 61 from 180 for an answer.
 
        
             
        
        
        
First, you have to multiply 60000 by 3 and you will get 180000. Then you add 4 and your final answer is 180004