Add 21/72 and 3/56
21/72 + 3/56 is 29/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
3/56 = 3 × 9/56 × 9 = 27/504 - Add the two like fractions:
147/504 + 27/504 = 147 + 27/504 = 174/504 - 174/504 simplified gives 29/84
- So, 21/72 + 3/56 = 29/84
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