Add 15/84 and 81/80
1st number: 15/84, 2nd number: 1 1/80
15/84 + 81/80 is 667/560.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
15/84 = 15 × 20/84 × 20 = 300/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
81/80 = 81 × 21/80 × 21 = 1701/1680 - Add the two like fractions:
300/1680 + 1701/1680 = 300 + 1701/1680 = 2001/1680 - 2001/1680 simplified gives 667/560
- So, 15/84 + 81/80 = 667/560
In mixed form: 1107/560
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