e = 2.71828

'e' is a mathematical constant sometimes called Napier's constant, and also known as Euler's number.

In the expression you have typed 'E' and the system is using this symbol to denote the constant 'e'.

If 'E' is an unknown variable that you want to find, then please use another symbol to denote the variable, for example: 'x', 'y', 'z', and so on.

If you want to solve the equation:

........

click here to see the step by step solution for the equation

x = 54/5

x = 10.8