Add 27/28 and 84/90
27/28 + 84/90 is 797/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
27/28 = 27 × 45/28 × 45 = 1215/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
84/90 = 84 × 14/90 × 14 = 1176/1260 - Add the two like fractions:
1215/1260 + 1176/1260 = 1215 + 1176/1260 = 2391/1260 - 2391/1260 simplified gives 797/420
- So, 27/28 + 84/90 = 797/420
In mixed form: 1377/420
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