Add 40/20 and 81/84
1st number: 2 0/20, 2nd number: 81/84
40/20 + 81/84 is 83/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
40/20 = 40 × 21/20 × 21 = 840/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
81/84 = 81 × 5/84 × 5 = 405/420 - Add the two like fractions:
840/420 + 405/420 = 840 + 405/420 = 1245/420 - 1245/420 simplified gives 83/28
- So, 40/20 + 81/84 = 83/28
In mixed form: 227/28
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