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Firstly it is easiest if you convert them into full fractions (with no whole numbers on the side so the fraction is top heavy)

4 x 12 = 48

7 + 48 = 56

So 4 and 7 twelves is equal to 56 twelves

Similarly we can work out 3 and 11 twelves

3 x 12 = 36

11 + 36 = 47

So this is equal to 47 twelves

Because the denominator is the same, you can simply subtract the nominator:

So you have 56 twelves subtract 47 twelves

56 - 47 = 9. so the answer is 9 twelvles.

This can then be simplified by dividing by three to get,

The answer is 3/4 (three quarters).
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14y ago

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