Add 15/90 and 90/28
1st number: 15/90, 2nd number: 3 6/28
15/90 + 90/28 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
15/90 = 15 × 14/90 × 14 = 210/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
90/28 = 90 × 45/28 × 45 = 4050/1260 - Add the two like fractions:
210/1260 + 4050/1260 = 210 + 4050/1260 = 4260/1260 - 4260/1260 simplified gives 71/21
- So, 15/90 + 90/28 = 71/21
In mixed form: 38/21
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