Add 42/81 and 84/20
1st number: 42/81, 2nd number: 4 4/20
42/81 + 84/20 is 637/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 20 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
42/81 = 42 × 20/81 × 20 = 840/1620 - Likewise, for the 2nd fraction, since 20 × 81 = 1620,
84/20 = 84 × 81/20 × 81 = 6804/1620 - Add the two like fractions:
840/1620 + 6804/1620 = 840 + 6804/1620 = 7644/1620 - 7644/1620 simplified gives 637/135
- So, 42/81 + 84/20 = 637/135
In mixed form: 497/135
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