First, we want to find the GCF of 15 and 21, which is 3. Now we do 15 divided by 3 and 21 divided by 3, which gives us 5 and 7. To rewrite the expression, we take the GCF and put it on the outside of the parenthesis. Inside the parenthesis, we put 5 + 7. So it'll look like this:
3(5 + 7)
        
                    
             
        
        
        
50
Mark brainliest please 
Hope this helps you
        
                    
             
        
        
        
<span>centimeter, inch, yard, meter, kilometer, mile</span>
        
             
        
        
        
Answer:shipping box=3.75*3*3.25=36.562 cubic feet.in width we have 15 cubes,in the legnt 12 while in height 13.with a total of 2340 cubes
Step-by-step explanation: