Add 21/10 and 42/28
1st number: 2 1/10, 2nd number: 1 14/28
21/10 + 42/28 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 10 × 14 = 140,
21/10 = 21 × 14/10 × 14 = 294/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Add the two like fractions:
294/140 + 210/140 = 294 + 210/140 = 504/140 - 504/140 simplified gives 18/5
- So, 21/10 + 42/28 = 18/5
In mixed form: 33/5
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