Answer: The required length of each piece of wood is  or 9 inches.
Step-by-step explanation:  Given that a piece of lumber is  feet long is to be cut into 3 equal pieces.
We are to find the length of each piece of wood in feet and in inches.
We will be using the UNITARY method to solve the given problem.
The length of 3 pieces of wood is equal to  
Therefore, the length of each piece of wood will be
Thus, the required length of each piece of wood is  or 9 inches.
 
        
             
        
        
        
Answer:
9222521251
Step-by-step explanation:
+6261113051+
151232065+3
156
 
        
             
        
        
        
Answer:
<h3>=> —6x = 12</h3><h3>=> —x = 12/6</h3><h3>=> —x = 2</h3>
<h2>=> x = —2</h2>
Step-by-step explanation:
hope it's helpful :-)
 
        
                    
             
        
        
        
Answer: m²-9mn+2n²
Step-by-step explanation: make use of BODMAS strategy. Let the unknown be x. 
-7mn+2m²+3n²-x= m²+2mn+n². Since we are concerned about getting the unknown,let's try to collect the like terms.
-7mn+2m²+3n²-(m²+2mn+n²)= x
-7mn+2m²+3n²-m²-2mn-n²= x
-7mn-2mn+2m²-m²+3n²-n²=x
-9mn+m²+2mn= x
X= m²-9mn+2n²
 
        
             
        
        
        
Answer:
The opposite of -11 is 11, and I dont understand what else you're asking
Step-by-step explanation: