Add 42/27 and 21/15
1st number: 1 15/27, 2nd number: 1 6/15
42/27 + 21/15 is 133/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 15 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
42/27 = 42 × 5/27 × 5 = 210/135 - Likewise, for the 2nd fraction, since 15 × 9 = 135,
21/15 = 21 × 9/15 × 9 = 189/135 - Add the two like fractions:
210/135 + 189/135 = 210 + 189/135 = 399/135 - 399/135 simplified gives 133/45
- So, 42/27 + 21/15 = 133/45
In mixed form: 243/45
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