Add 90/84 and 81/18
1st number: 1 6/84, 2nd number: 4 9/18
90/84 + 81/18 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
90/84 = 90 × 3/84 × 3 = 270/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
81/18 = 81 × 14/18 × 14 = 1134/252 - Add the two like fractions:
270/252 + 1134/252 = 270 + 1134/252 = 1404/252 - 1404/252 simplified gives 39/7
- So, 90/84 + 81/18 = 39/7
In mixed form: 54/7
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