Add 21/48 and 5/7
21/48 + 5/7 is 129/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 7 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
21/48 = 21 × 7/48 × 7 = 147/336 - Likewise, for the 2nd fraction, since 7 × 48 = 336,
5/7 = 5 × 48/7 × 48 = 240/336 - Add the two like fractions:
147/336 + 240/336 = 147 + 240/336 = 387/336 - 387/336 simplified gives 129/112
- So, 21/48 + 5/7 = 129/112
In mixed form: 117/112
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