Add 28/10 and 49/21
1st number: 2 8/10, 2nd number: 2 7/21
28/10 + 49/21 is 77/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
28/10 = 28 × 21/10 × 21 = 588/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
49/21 = 49 × 10/21 × 10 = 490/210 - Add the two like fractions:
588/210 + 490/210 = 588 + 490/210 = 1078/210 - 1078/210 simplified gives 77/15
- So, 28/10 + 49/21 = 77/15
In mixed form: 52/15
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