Add 21/15 and 30/48
1st number: 1 6/15, 2nd number: 30/48
21/15 + 30/48 is 81/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
21/15 = 21 × 16/15 × 16 = 336/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
30/48 = 30 × 5/48 × 5 = 150/240 - Add the two like fractions:
336/240 + 150/240 = 336 + 150/240 = 486/240 - 486/240 simplified gives 81/40
- So, 21/15 + 30/48 = 81/40
In mixed form: 21/40
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