Add 28/54 and 42/15
1st number: 28/54, 2nd number: 2 12/15
28/54 + 42/15 is 448/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 15 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270 - Likewise, for the 2nd fraction, since 15 × 18 = 270,
42/15 = 42 × 18/15 × 18 = 756/270 - Add the two like fractions:
140/270 + 756/270 = 140 + 756/270 = 896/270 - 896/270 simplified gives 448/135
- So, 28/54 + 42/15 = 448/135
In mixed form: 343/135
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