Add 20/12 and 15/63
1st number: 1 8/12, 2nd number: 15/63
20/12 + 15/63 is 40/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
20/12 = 20 × 21/12 × 21 = 420/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
15/63 = 15 × 4/63 × 4 = 60/252 - Add the two like fractions:
420/252 + 60/252 = 420 + 60/252 = 480/252 - 480/252 simplified gives 40/21
- So, 20/12 + 15/63 = 40/21
In mixed form: 119/21
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