Add 42/15 and 20/54
1st number: 2 12/15, 2nd number: 20/54
42/15 + 20/54 is 428/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
42/15 = 42 × 18/15 × 18 = 756/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270 - Add the two like fractions:
756/270 + 100/270 = 756 + 100/270 = 856/270 - 856/270 simplified gives 428/135
- So, 42/15 + 20/54 = 428/135
In mixed form: 323/135
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