Add 12/56 and 21/15
1st number: 12/56, 2nd number: 1 6/15
12/56 + 21/15 is 113/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
12/56 = 12 × 15/56 × 15 = 180/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
21/15 = 21 × 56/15 × 56 = 1176/840 - Add the two like fractions:
180/840 + 1176/840 = 180 + 1176/840 = 1356/840 - 1356/840 simplified gives 113/70
- So, 12/56 + 21/15 = 113/70
In mixed form: 143/70
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