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12/42

We note that both numbers are even, and so will cancel down (divide) by '2'.

Hence

12/42 = 6/21

Again we note that both numbers are multiples of '3'. So cancel down by '3'

Hence

6/21 = 2/7

2/7 will not cancel down any further as both '2' and '7' are prime numbers.

Hence 12/42 = 2/7

NB Fluency with your multiplication tables is critical for this method.

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lenpollock

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2y ago

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More answers

12|42 / 6|6 = 2|7

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Wiki User

16y ago
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Q: How do you Simplify the fraction 12 over 42?
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