Add 18/30 and 9/28
18/30 + 9/28 is 129/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
18/30 = 18 × 14/30 × 14 = 252/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
9/28 = 9 × 15/28 × 15 = 135/420 - Add the two like fractions:
252/420 + 135/420 = 252 + 135/420 = 387/420 - 387/420 simplified gives 129/140
- So, 18/30 + 9/28 = 129/140
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