Add 9/10 and 81/84
9/10 + 81/84 is 261/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 10 × 42 = 420,
9/10 = 9 × 42/10 × 42 = 378/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
81/84 = 81 × 5/84 × 5 = 405/420 - Add the two like fractions:
378/420 + 405/420 = 378 + 405/420 = 783/420 - 783/420 simplified gives 261/140
- So, 9/10 + 81/84 = 261/140
In mixed form: 1121/140
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