Add 81/45 and 21/28
1st number: 1 36/45, 2nd number: 21/28
81/45 + 21/28 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
81/45 = 81 × 28/45 × 28 = 2268/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
21/28 = 21 × 45/28 × 45 = 945/1260 - Add the two like fractions:
2268/1260 + 945/1260 = 2268 + 945/1260 = 3213/1260 - 3213/1260 simplified gives 51/20
- So, 81/45 + 21/28 = 51/20
In mixed form: 211/20
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