Answer:
x=20
Step-by-step explanation:
Well just cross multiply if its easier
x(3)=3x
12*5=60
60=3x
x=20
 
        
                    
             
        
        
        
Answer: m=-1
Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
                     m-(-(4+m)+2)=0 
1.1     Pull out like factors :
   2m + 2  =   2 • (m + 1) 
2.1      Solve :    2   =  0
This equation has no solution.
A a non-zero constant never equals zero.
2.2      Solve  :    m+1 = 0  
 Subtract  1  from both sides of the equation :  
                      m = -1
 
        
             
        
        
        
Answer: (x+4)(x^2+16)
Step-by-step explanation:
 x^3+4x^2+16x+64
x^3+4x^2+16x+64
=(x+4)(x^2+16)
have a nice day!!
 
        
             
        
        
        
The answer would be -2 or 0