Add 15/18 and 42/63
15/18 + 42/63 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
42/63 = 42 × 2/63 × 2 = 84/126 - Add the two like fractions:
105/126 + 84/126 = 105 + 84/126 = 189/126 - 189/126 simplified gives 3/2
- So, 15/18 + 42/63 = 3/2
In mixed form: 11/2
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