Answer:
5
Step-by-step explanation:
-6+2n=3n-(6+5)
-6+2n=3n-11
-6+2n-3n=-11
-6-n=-11
n=-6-(-11)
n=-6+11
n=5
 
        
             
        
        
        
Answer: Maria has 10 bills of 5€ and 10 bills of 10€. 
 She has a total of 150€.
 
Step-by-step explanation:
 Let be "f" the number of 5€ bills that Maria has and "t" the number of 10€ bills that Maria has.
 Set up a system of equations:
 
 Use the Substitution method to solve the system of equations:
 1. Solve for "f" from the first equation:
 
 2. Substitute the equation obtained into the second equation and solve for "t".
 Then:
 
 3. Substitute the value of "t" into the equation  and evaluate:
 and evaluate:
 
 Therefore, Maria has 10 bills of 5€ and 10 bills of 10 €. 
 So the total amount of money she has, is:
 
 She has a total of 150€.
 
        
             
        
        
        
Answer:
The expression x-0.3x represents the total cost of Minecraft Dungeons.
Step-by-step explanation:
Given that:
Percentage of Minecraft sale = 30% off 
Cost of Minecraft Dungeons = x 
Amount of discount on Minecraft Dungeons = 30% of x
Amount of discount = 
Amount of discount = 0.3x
Total cost of Minecraft Dungeons = Total cost - Discount
Total cost of Minecraft Dungeons = x - 0.3x
Hence,
The expression x-0.3x represents the total cost of Minecraft Dungeons.
 
        
                    
             
        
        
        
You need to divide 25.4 and 4 and you'll get 6.35