- You have the following equation:
14 = x - 6
In order to solve the previous equation for x, you first sum 6 both sides of the equation:
14 = x - 6
14 + 6 = x - 6 + 6 simplify
20 = x
20 = x is the same that x = 20. Hence, the anser is x = 20.
- You have the following equation:
4 - (2x + 9) = 11 first, eliminate parenthesis
4 - 2x - 9 = 11 signs inside the parenthesis change because it was preceeded by a minus sign
Next, you simplify similar terms:
-2x - 5 = 11 sum 15 both sides
-2x - 5 + 5 = 11 + 5 simplify
-2x = 16 divide both sides by -2
-2x/(-2) = 16/(-2)
x = - 8
Hence, the answer is x = -8