Add 54/42 and 20/21
1st number: 1 12/42, 2nd number: 20/21
54/42 + 20/21 is 47/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
54/42 = 54 × 1/42 × 1 = 54/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Add the two like fractions:
54/42 + 40/42 = 54 + 40/42 = 94/42 - 94/42 simplified gives 47/21
- So, 54/42 + 20/21 = 47/21
In mixed form: 25/21
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