Add 21/56 and 45/18
1st number: 21/56, 2nd number: 2 9/18
21/56 + 45/18 is 23/8.
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,
45/18 = 45 × 28/18 × 28 = 1260/504 - Add the two like fractions:
189/504 + 1260/504 = 189 + 1260/504 = 1449/504 - 1449/504 simplified gives 23/8
- So, 21/56 + 45/18 = 23/8
In mixed form: 27/8
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