Since all the angles are congruent, the sides must be congruent too. 
So, just have one equation on one side equal to another. 
5x= 3x+6
Subtract 3x from both sides. 
2x=6
Divide 2 into both sides. 
x=3. 
We can check this by seeing if all the sides are the same.
5(3)= 15
6(3)-5= 15
3(3)+6= 15
I hope this helps!
~cupcake
        
             
        
        
        
Answer:
PUSHIN 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
172% of 50 means 172÷100 multiplied by 50 will give you 86
 
        
                    
             
        
        
        
Answer:
0.08
Step-by-step explanation:
1.6 liters of the drink was distributed in 20 cups
The litres of drink in each cup can be calculated as follows
= 1.6/20
= 0.08
Hence 0.08 liters of drink would be in each cup