Add 28/18 and 21/56
1st number: 1 10/18, 2nd number: 21/56
28/18 + 21/56 is 139/72.
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,
28/18 = 28 × 28/18 × 28 = 784/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Add the two like fractions:
784/504 + 189/504 = 784 + 189/504 = 973/504 - 973/504 simplified gives 139/72
- So, 28/18 + 21/56 = 139/72
In mixed form: 167/72
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