Add 21/28 and 56/63
21/28 + 56/63 is 59/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
56/63 = 56 × 4/63 × 4 = 224/252 - Add the two like fractions:
189/252 + 224/252 = 189 + 224/252 = 413/252 - 413/252 simplified gives 59/36
- So, 21/28 + 56/63 = 59/36
In mixed form: 123/36
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