Isolating Variables In Equations - By Lisa O Flaherty
How to use this applet:This applet is very simple to use. After loading you are required only to click the relevant buttons that appear and they will take you through
a step by step demonstration of how to solve this type of problem.Notes on the maths used in the applet:
Although this topic rarely appears on the Leaving Cert exam on its own or even as a large question( when it appears it tends to be as part of Question 1), it is nevertheless an important and useful method to master as it can help in the simplification of many other problems.
When attempting to solve a question of this type the basic rules of algebra(used when solving any equation) must be adhered to ie.,
1. You can ADD or SUBTRACT the same quantity to or from both sides.
2. You can MULTIPLY or DIVIDE both sides by the same quantity.
3. You can SQUARE, CUBE, get the SQUARE ROOT of, etc of both sides.
You can apply any of these rules provided that you do so to both sides.
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