Add 21/18 and 20/56
1st number: 1 3/18, 2nd number: 20/56
21/18 + 20/56 is 32/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
21/18 = 21 × 28/18 × 28 = 588/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
20/56 = 20 × 9/56 × 9 = 180/504 - Add the two like fractions:
588/504 + 180/504 = 588 + 180/504 = 768/504 - 768/504 simplified gives 32/21
- So, 21/18 + 20/56 = 32/21
In mixed form: 111/21
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