Add 56/15 and 70/21
1st number: 3 11/15, 2nd number: 3 7/21
56/15 + 70/21 is 106/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
56/15 = 56 × 7/15 × 7 = 392/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105 - Add the two like fractions:
392/105 + 350/105 = 392 + 350/105 = 742/105 - 742/105 simplified gives 106/15
- So, 56/15 + 70/21 = 106/15
In mixed form: 71/15
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