Add 18/28 and 25/30
18/28 + 25/30 is 31/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
18/28 = 18 × 15/28 × 15 = 270/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
25/30 = 25 × 14/30 × 14 = 350/420 - Add the two like fractions:
270/420 + 350/420 = 270 + 350/420 = 620/420 - 620/420 simplified gives 31/21
- So, 18/28 + 25/30 = 31/21
In mixed form: 110/21
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