dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day! A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!

Indicate the equation variable with a letter (often x, avoid ?) and to indicate that it is this unknown which is sought, the solver will return the subtraction result either as an integer, fraction, or a floating point number (numeric form).

How to solve a system with multiple subtractions?

Indicate several lines of subtractions with the same variable(s) or eventually link them with the AND logical operator: &&.

Example: 5-z is read 5 minus z or z subtracts from 5

Source code

dCode retains ownership of the source code of the script Subtraction with Unknown(s) online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be released for free. To download the online Subtraction with Unknown(s) script for offline use on PC, iPhone or Android, ask for price quote on contact page !