Add 15/21 and 21/48
15/21 + 21/48 is 129/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
15/21 = 15 × 16/21 × 16 = 240/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
21/48 = 21 × 7/48 × 7 = 147/336 - Add the two like fractions:
240/336 + 147/336 = 240 + 147/336 = 387/336 - 387/336 simplified gives 129/112
- So, 15/21 + 21/48 = 129/112
In mixed form: 117/112
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