Add 90/28 and 15/45
1st number: 3 6/28, 2nd number: 15/45
90/28 + 15/45 is 149/42.
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,
90/28 = 90 × 45/28 × 45 = 4050/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Add the two like fractions:
4050/1260 + 420/1260 = 4050 + 420/1260 = 4470/1260 - 4470/1260 simplified gives 149/42
- So, 90/28 + 15/45 = 149/42
In mixed form: 323/42
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