Add 54/42 and 20/12
1st number: 1 12/42, 2nd number: 1 8/12
54/42 + 20/12 is 62/21.
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,
54/42 = 54 × 2/42 × 2 = 108/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Add the two like fractions:
108/84 + 140/84 = 108 + 140/84 = 248/84 - 248/84 simplified gives 62/21
- So, 54/42 + 20/12 = 62/21
In mixed form: 220/21
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