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First we need to multiply out the bracket 7k-21=3k-5 Then we must make sure our variable is only on one side so we need to deduct 3k from both sides 4k-21=-5 Now we should isolate our variable so add 21 to b...

First think how you would solve this if it was simply an '=' sign instead of a > Deduct 5 from both sides This would give us 6y>3 Divide both sides by 6 Think: because this is an inequality, is the val...

x 2 + y 2 = 36 (1) x = 2y + 6 (2) You can solve simulateous equations in three ways: Substitution, addition or subtraction. If one equation contains both x 2 and y 2 then you should use substitution as with ...

Simeltanous equations are a pair of equations that have 2 unknows. In order to solve a simelatneous equation 1 of the unknows must be eliminated. This can be done by either: 1. Substitution - This involves p...

Start by making a note of each topic that may come up in your exam. You can find these in your textbook or revision guide. Let me know if you need help finding the list of topics that your exam board uses. T...