Add 56/80 and 21/18
1st number: 56/80, 2nd number: 1 3/18
56/80 + 21/18 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
56/80 = 56 × 9/80 × 9 = 504/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
21/18 = 21 × 40/18 × 40 = 840/720 - Add the two like fractions:
504/720 + 840/720 = 504 + 840/720 = 1344/720 - 1344/720 simplified gives 28/15
- So, 56/80 + 21/18 = 28/15
In mixed form: 113/15
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