Mathematics for IGCSE & O level - Equations (Section 8 - No. 17)
In the context of solving simultaneous equations, what does it mean to 'eliminate' a variable?
To make the coefficient of a variable zero
To remove a variable from both equations
To set the variable equal to 0
To solve for the variable
説明
Eliminating a variable means manipulating the equations so that the coefficient of the variable becomes zero, effectively removing the variable from one of the equations and allowing you to solve for the other variable.