Answer:
Exact Form:
x= -23/2
Decimal:
x= -11.5
Mixed Number:
x= -11/2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable
 
        
                    
             
        
        
        
Answer:


Step-by-step explanation:
Note that the entire segment RT is the combined lengths of RS and ST. So: 

We know that RT is 108, RS is (9y+5), and ST is (3y+7). Substitute: 

On the right, combine like terms: 

Add: 

Subtract 12 from both sides. The right cancels: 

Divide both sides by 12: 

So, the value of y is 8. 
To find RS and ST, substitute 8 for y. So: 

Substitute 8 for y: 

Multiply: 

Add: 

Do the same for ST: 

Substitute 8 for y: 

Multiply: 

Add: 

 
        
                    
             
        
        
        
Answer:
D.
Step-by-step explanation:
4 x (26 + 72) is 4 time more than the expression of 26 + 72