Add 21/56 and 3/72
21/56 + 3/72 is 5/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 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 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
189/504 + 21/504 = 189 + 21/504 = 210/504 - 210/504 simplified gives 5/12
- So, 21/56 + 3/72 = 5/12
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