Add 90/84 and 81/90
1st number: 1 6/84, 2nd number: 81/90
90/84 + 81/90 is 69/35.
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,
90/84 = 90 × 15/84 × 15 = 1350/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
81/90 = 81 × 14/90 × 14 = 1134/1260 - Add the two like fractions:
1350/1260 + 1134/1260 = 1350 + 1134/1260 = 2484/1260 - 2484/1260 simplified gives 69/35
- So, 90/84 + 81/90 = 69/35
In mixed form: 134/35
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