Add 20/12 and 45/63
1st number: 1 8/12, 2nd number: 45/63
20/12 + 45/63 is 50/21.
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,
45/63 = 45 × 4/63 × 4 = 180/252 - Add the two like fractions:
420/252 + 180/252 = 420 + 180/252 = 600/252 - 600/252 simplified gives 50/21
- So, 20/12 + 45/63 = 50/21
In mixed form: 28/21
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