(3 x 10) x 8 = 3 x (10 x 8)
this is called the associative property of multiplication.
it states : (a * b) * c = a * (b * c)
        
                    
             
        
        
        
Answer:

hope it helps if it helps don'tforget to like and mark
 
        
             
        
        
        
Consider posting each question separately, please.
Given   <span>-2.8k-4.31=-15.79 :
1) Isolate the "k" term on the left by adding 4.31 to both sides of this equation.
2) Simplify the right side.
3) Divide both sides by -2.8 and you'll have the answer:  k = ?</span>