Add 9/84 and 18/20
9/84 + 18/20 is 141/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
9/84 = 9 × 5/84 × 5 = 45/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
18/20 = 18 × 21/20 × 21 = 378/420 - Add the two like fractions:
45/420 + 378/420 = 45 + 378/420 = 423/420 - 423/420 simplified gives 141/140
- So, 9/84 + 18/20 = 141/140
In mixed form: 11/140
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