Add 80/28 and 15/45
1st number: 2 24/28, 2nd number: 15/45
80/28 + 15/45 is 67/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
80/28 = 80 × 45/28 × 45 = 3600/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Add the two like fractions:
3600/1260 + 420/1260 = 3600 + 420/1260 = 4020/1260 - 4020/1260 simplified gives 67/21
- So, 80/28 + 15/45 = 67/21
In mixed form: 34/21
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