Simultaneous Equations by Elimination
On this page you will find videos describing how to go about solving simultaneous equations. They work through in order, with the simplest types in the first video, and the hardest in the last.
We use two mantras for attacking simultaneous equations:
We use two mantras for attacking simultaneous equations:
Eliminate
Substitute Check |
Same Sign Subtract
Different aDD |
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This first video in the series on solving simultaneous equations introduces you to the method of solving using the two mantras above.
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In this second video on solving simultaneous equations, we explore the method a bit deeper, and look at a couple of different situations that you might come across.
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This third video in the series on solving simultaneous equations introduces methods to deal with pairs of equations when there isn't a variable that has the same coefficient in both equations.
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In this fourth and final video we look at how we solve simultaneous equations when neither variable has a coefficient which is a multiple of the other coefficient.
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