Add 81/15 and 70/84
1st number: 5 6/15, 2nd number: 70/84
81/15 + 70/84 is 187/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
81/15 = 81 × 28/15 × 28 = 2268/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
70/84 = 70 × 5/84 × 5 = 350/420 - Add the two like fractions:
2268/420 + 350/420 = 2268 + 350/420 = 2618/420 - 2618/420 simplified gives 187/30
- So, 81/15 + 70/84 = 187/30
In mixed form: 67/30
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