Subtract 2/28 from 20/12, Solve 1 8/12

Subtract 2/28 from 20/12

1^st number: 1 8/12, 2^nd number: 2/28

20/12 - 2/28 is 67/42.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
2/28 = 2 × 3/28 × 3 = 6/84
Subtract the two like fractions:
140/84 - 6/84 = 140 - 6/84 = 134/84
After reducing the fraction, the answer is 67/42
In mixed form: 125/42

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