Add 28/30 and 56/21
1st number: 28/30, 2nd number: 2 14/21
28/30 + 56/21 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
56/21 = 56 × 10/21 × 10 = 560/210 - Add the two like fractions:
196/210 + 560/210 = 196 + 560/210 = 756/210 - 756/210 simplified gives 18/5
- So, 28/30 + 56/21 = 18/5
In mixed form: 33/5
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