Over a million students use our free study notes to help them with their homework
1 - We first need to find a common factor, something that is the same in both parts of the expression.
2 - Then we need to take this out of the expression by dividing both parts of the ex...
In questions concerning compound interest, interest is added to principle sum at the end of each year. Therefore, the interest increases each year as you are paying interest on...
If you know how to multiply fractions, then dividing fractions only involves two more simple steps!
1. Turn the division sign into a multiplication sign.
2. Flip the last f...
To solve these simulataneous equations we need to use substitution:If 2x + y = 13 then y = 13 - 2xTherefore 3x - y = 12 can be rewritten as 3x - (13 - 2x) = 12We can expa...
If we first calculate 30% of £4 to work out how much the price of the book has been reduced by.10% of £4 is £0.40. We know 30% will be this value multiplied by 3. Therefore 30% of £4 is £1.20.Now that we ...
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