Add 21/56 and 7/9
21/56 + 7/9 is 83/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 9 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 9 × 56 = 504,
7/9 = 7 × 56/9 × 56 = 392/504 - Add the two like fractions:
189/504 + 392/504 = 189 + 392/504 = 581/504 - 581/504 simplified gives 83/72
- So, 21/56 + 7/9 = 83/72
In mixed form: 111/72
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