A slice that cuts through the left top wedge and the bottom right
        
             
        
        
        
Answer: Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 
 4*x+2*x+1-(2*x-x+21)=0 
Step by step solution :
STEP
1
:
Pulling out like terms
 1.1 Pull out like factors :
 5x - 20 = 5 • (x - 4) 
Equation at the end of step
1
:
STEP
2
:
Equations which are never true:
 2.1 Solve : 5 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
 2.2 Solve : x-4 = 0 
 Add 4 to both sides of the equation : 
 x = 4 
One solution was found :
 x = 4