Add 81/90 and 42/28
1st number: 81/90, 2nd number: 1 14/28
81/90 + 42/28 is 12/5.
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,
81/90 = 81 × 14/90 × 14 = 1134/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
42/28 = 42 × 45/28 × 45 = 1890/1260 - Add the two like fractions:
1134/1260 + 1890/1260 = 1134 + 1890/1260 = 3024/1260 - 3024/1260 simplified gives 12/5
- So, 81/90 + 42/28 = 12/5
In mixed form: 22/5
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