What Does 'Simultaneous' Mean in Linear Equations?

[mech-eng]

The term simultaneous in simultaneous linear equations does not make sense to me? Would you explain the what simultaneous mean there?

Example: "We have all solved simultaneous linear equations - for example,

2x + y = 4
x - 2y = -3 "

Source: Linear Algebra by Fraleigh/Beauregard.

Thank you.

 

[PeroK]

The term simultaneous in simultaneous linear equations does not make sense to me? Would you explain the what simultaneous mean there?

Example: "We have all solved simultaneous linear equations - for example,

2x + y = 4
x - 2y = -3 "

Source: Linear Algebra by Fraleigh/Beauregard.

Thank you.

It means more than one equation that must be satisfied by the same solution: in this case, the same values of $x$ and $y$ must satisfy both equations.

http://www.mathcentre.ac.uk/resources/Engineering maths first aid kit/latexsource and diagrams/2_13.pdf