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Do not use x which is a letter, so a variable, instead use the symbol * or the multiplication cross ×, nothing else.

Example: $ x*2=10 \iff x=5 $

Indicate the variable with a letter (like x or y, do not use ?) and note it as unknown, the solver will give the subtraction result either in the form of integer, of fraction, or in numerical form.

How to solve a system with multiple multiplications?

Indicate several lines of equations based on multiplications with the same variable(s). Or, separate the multiplications with the AND logical operator: &&.

How to read a multiplication?

The sign of multiplication can be read times or 'multiplied', it is sometimes implied and therefore omitted.

Example:5y for 5 times y

Source code

dCode retains ownership of the online 'Multiplication with Unknown(s)' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'Multiplication with Unknown(s)' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'Multiplication with Unknown(s)' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'Multiplication with Unknown(s)' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

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Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Multiplication with Unknown(s)' tool, so feel free to write! Thank you!

Thanks to your feedback and relevant comments, dCode has developed the best 'Multiplication with Unknown(s)' tool, so feel free to write! Thank you!