Add 15/42 and 45/27
1st number: 15/42, 2nd number: 1 18/27
15/42 + 45/27 is 85/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
15/42 = 15 × 9/42 × 9 = 135/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
45/27 = 45 × 14/27 × 14 = 630/378 - Add the two like fractions:
135/378 + 630/378 = 135 + 630/378 = 765/378 - 765/378 simplified gives 85/42
- So, 15/42 + 45/27 = 85/42
In mixed form: 21/42
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