Add 20/12 and 70/63
1st number: 1 8/12, 2nd number: 1 7/63
20/12 + 70/63 is 25/9.
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,
70/63 = 70 × 4/63 × 4 = 280/252 - Add the two like fractions:
420/252 + 280/252 = 420 + 280/252 = 700/252 - 700/252 simplified gives 25/9
- So, 20/12 + 70/63 = 25/9
In mixed form: 27/9
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