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In GCSE history, one of the things they are testing you on is your ability to communicate your knowledge and thoughts under time pressure. With the right approach and enou...

To work out simultaneous equations, the aim is to remove one letter from the equations, i.e. Remove the y's so you have only x's and numbers (or vice versa).

One way to do ...

Several factors contributed to the rise of Hitler during the early 20th century, culminating in his domination of Germany, and the collapse of the Weimar Republic. Firstly it is important to consider the ...

We need to have either the same number of x's or the same number of y's in each equation so that we can add or subtract them to be left with just x or just y. We can do this by multiplying the second e...

1) Let x=0.565656...

2) Thus 100x=56.565656...

3) Subtracting equation 1) from 2) gives:

99x=56

4) Rearrange for x:

x=56/99, Also x...