Add 28/36 and 21/56
28/36 + 21/56 is 83/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 36 × 14 = 504,
28/36 = 28 × 14/36 × 14 = 392/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Add the two like fractions:
392/504 + 189/504 = 392 + 189/504 = 581/504 - 581/504 simplified gives 83/72
- So, 28/36 + 21/56 = 83/72
In mixed form: 111/72
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