Add 27/15 and 42/7
1st number: 1 12/15, 2nd number: 6 0/7
27/15 + 42/7 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
27/15 = 27 × 7/15 × 7 = 189/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
42/7 = 42 × 15/7 × 15 = 630/105 - Add the two like fractions:
189/105 + 630/105 = 189 + 630/105 = 819/105 - 819/105 simplified gives 39/5
- So, 27/15 + 42/7 = 39/5
In mixed form: 74/5
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