Add 56/84 and 81/90
56/84 + 81/90 is 47/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
56/84 = 56 × 15/84 × 15 = 840/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
81/90 = 81 × 14/90 × 14 = 1134/1260 - Add the two like fractions:
840/1260 + 1134/1260 = 840 + 1134/1260 = 1974/1260 - 1974/1260 simplified gives 47/30
- So, 56/84 + 81/90 = 47/30
In mixed form: 117/30
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