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We need to start by translating the sentences into algebraic equations. There are 2 unknowns, Christine’s money and David’s money. Let Christine’s money= x Let David’s money = y If Christine gave David £3...
Remember that both sides of the equation need to 'balance', so any changes that we make to the right hand side must also be made to the left hand side.
Let's start by getting rid of the '5' on the...
There are 2 easiest and quickest ways to approach this question:
1). By elimination:
When using the elimination method, you want to make sure that you choose the correct varia...
To solve the equation you need to factorise the quadratic. This means you need to find 2 numbers that when multiplied make 5 and when added together make -6. These would be -1 and -5. You can now separate...
Firstly if you multiply the number infront of the x2 by the number at the end to give -12. And then take the number infront of x, which is -1. Now we need to find two numbers that add to make -...
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