Add 21/48 and 42/15
1st number: 21/48, 2nd number: 2 12/15
21/48 + 42/15 is 259/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Add the two like fractions:
105/240 + 672/240 = 105 + 672/240 = 777/240 - 777/240 simplified gives 259/80
- So, 21/48 + 42/15 = 259/80
In mixed form: 319/80
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