Add 3/90 and 81/84
3/90 + 81/84 is 419/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
81/84 = 81 × 15/84 × 15 = 1215/1260 - Add the two like fractions:
42/1260 + 1215/1260 = 42 + 1215/1260 = 1257/1260 - 1257/1260 simplified gives 419/420
- So, 3/90 + 81/84 = 419/420
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