Enter Equation or Inequality

Solve the following equation

2x-4=20

Solve for x

2x - 4 = 20

Divide each side by 2

2x
2
=
  
-4
2

Group constants

Group our constants -4 and 20.
add 4 to both sides

2x - 4 + 4 = 20 + 4

Cancel 4 on the left side:

2x = 24

Divide each side of the equation by 2

2x
2
=
  
24
2

x = 12

Final Answer


x = 12