Answer:
w=2.5
Step-by-step explanation:
divide 12.5 by 5: 12.5/5=2.5, so w=2.5
 
        
                    
             
        
        
        
Answer:
11 4-passenger cars
Step-by-step explanation:
let 'x' represent the number of 4-passenger cars,then 'x-3' represent the number of 6-passenger cars.
92=4x+6(x-3)
92=4x+6x-18
92=10x-18
92+18=10x
110=10x
x=110/10
x=11
Therefore there are 11 4-passenger cars
 
        
             
        
        
        
To isolate the variable means to have it by itself on one side of the equation, where the variable equals an expression.
To isolate  , we will need to remove the variables and other terms "connected" to the
, we will need to remove the variables and other terms "connected" to the  variable:
 variable:



By dividing terms "connected" to our  variable, we have isolated it one side of the equation.
 variable, we have isolated it one side of the equation.
 
        
             
        
        
        
Answer:
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