- Every equation must end with a semicolon (
**;**). A semicolon is optional for the last equation in a set of equations. - Every equation must contain exactly one equals sign (
**=**). - Spaces are optional, ESolver will completely ignore any spaces and then parse your input into linear equations.
- The only valid characters that can be used to form an equation are:
**Letters:**- A to Z
- a to z

**Numbers:**- 0 to 9

**Signs:**- Subtraction (
**-**) - Multiplication (
*****) - Division (
**/**) - Decimal (
**.**) - Equals (
**=**) - Semicolon (
**;**)

- Subtraction (