Add 21/56 and 20/18
1st number: 21/56, 2nd number: 1 2/18
21/56 + 20/18 is 107/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
20/18 = 20 × 28/18 × 28 = 560/504 - Add the two like fractions:
189/504 + 560/504 = 189 + 560/504 = 749/504 - 749/504 simplified gives 107/72
- So, 21/56 + 20/18 = 107/72
In mixed form: 135/72
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