Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Two Equations with Two Unknowns

Online calculator for two equations with two unknowns

Sponsored Links

Two equations with two unknowns can be expressed as

a1 x + b1 y = c1                                 (1)

a2 x + b2 y = c2                                 (2)

Example - Two Equations with Two Unknowns

The two equations

3 x + 5 y = 7                 

4 x - 3 y = 19               

with the two unknown x and y can be solved by rearranging (1) to

y = (7 - 3 x) / 5    

and substituting this expression for y in (2)

4 x - 3 ((7 - 3 x) / 5 ) = 19

- the value for x can then be calculated to

x = 4

By substituting this value for x in expression 1

3 4 + 5 y = 7

- the value for y can be calculated to

y = -1

Online Calculator for Two Equations with Two Unknowns

The calculator below can be used to estimate x and y values for two equations with two unknowns.

x + y =

x + y =

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: equations two unknowns
  • es: ecuaciones con dos inc√≥gnitas
  • de: Gleichungen mit zwei Unbekannten
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!


This page can be cited as

  • Engineering ToolBox, (2012). Two Equations with Two Unknowns. [online] Available at: [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .


3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

11 2

Sponsored Links