Answer:
- Variable x in first equation
Step-by-step explanation:
<u>Given system</u>
Variables in this system are x and y.
Isolating a variable means rearranging the equation so that a variable of our interest is on its own in one side of the equal sign.
We see <u>variable x is isolated </u>in the first equation.
In the second equation both of the variables are on the same side so they are not isolated.
 
        
             
        
        
        
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Step-by-3s fwefsdfhksvfjhasdfjkayweh cvfkhgjsedfcwjke,shcfv ksajdghmcva sdj,hmcndsafsdfvhkyiuo;p./9;;-0../[]0-9,p9ol8-0.9[,u90yml98kn7b4563v45gcw43qxdc234v543b65ntoumyp,.09/[7pyotiyurtrhsgdf
 
        
                    
             
        
        
        
Answer:
5
Step-by-step explanation:
-1+6=5
 
        
                    
             
        
        
        
Answer:
x=5
Step-by-step explanation:
y= 8x + 20
60= 8x + 20
40= 8x
x=5
 
        
                    
             
        
        
        
Answer:
3
Step-by-step explanation:
15 divided by 5 is 3 
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