Add 18/28 and 12/30
18/28 + 12/30 is 73/70.
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,
12/30 = 12 × 14/30 × 14 = 168/420 - Add the two like fractions:
270/420 + 168/420 = 270 + 168/420 = 438/420 - 438/420 simplified gives 73/70
- So, 18/28 + 12/30 = 73/70
In mixed form: 13/70
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