Add 21/49 and 15/56
21/49 + 15/56 is 39/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 56 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
21/49 = 21 × 8/49 × 8 = 168/392 - Likewise, for the 2nd fraction, since 56 × 7 = 392,
15/56 = 15 × 7/56 × 7 = 105/392 - Add the two like fractions:
168/392 + 105/392 = 168 + 105/392 = 273/392 - 273/392 simplified gives 39/56
- So, 21/49 + 15/56 = 39/56
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