Add 20/12 and 45/28
1st number: 1 8/12, 2nd number: 1 17/28
20/12 + 45/28 is 275/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
20/12 = 20 × 7/12 × 7 = 140/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
45/28 = 45 × 3/28 × 3 = 135/84 - Add the two like fractions:
140/84 + 135/84 = 140 + 135/84 = 275/84 - So, 20/12 + 45/28 = 275/84
In mixed form: 323/84
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