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Simultaneous Equations

Solving simultaneous equations can be done in one of 3 ways: by substitution, by elimination and by using graphs. In this article, we will look at solving the equations using elimination.

EXAMPLE I

EXAMPLE II

EXAMPLE III

Now for a more complicated example. Here we have to first multiply the first equation by 2 so that we can have the y-variable having the same coefficient in both equations.

This way, when subtracting the 2 equations, the ‘y’ variables cancel out.

For more on Simultaneous Equation by Elimination click here