Add 21/15 and 7/56
1st number: 1 6/15, 2nd number: 7/56
21/15 + 7/56 is 61/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
21/15 = 21 × 56/15 × 56 = 1176/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
7/56 = 7 × 15/56 × 15 = 105/840 - Add the two like fractions:
1176/840 + 105/840 = 1176 + 105/840 = 1281/840 - 1281/840 simplified gives 61/40
- So, 21/15 + 7/56 = 61/40
In mixed form: 121/40
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