Add 1/42 and 20/12
1st number: 1/42, 2nd number: 1 8/12
1/42 + 20/12 is 71/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
1/42 = 1 × 2/42 × 2 = 2/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Add the two like fractions:
2/84 + 140/84 = 2 + 140/84 = 142/84 - 142/84 simplified gives 71/42
- So, 1/42 + 20/12 = 71/42
In mixed form: 129/42
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