Add 20/45 and 90/28
1st number: 20/45, 2nd number: 3 6/28
20/45 + 90/28 is 461/126.
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,
20/45 = 20 × 28/45 × 28 = 560/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
90/28 = 90 × 45/28 × 45 = 4050/1260 - Add the two like fractions:
560/1260 + 4050/1260 = 560 + 4050/1260 = 4610/1260 - 4610/1260 simplified gives 461/126
- So, 20/45 + 90/28 = 461/126
In mixed form: 383/126
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