Add 84/63 and 72/20
1st number: 1 21/63, 2nd number: 3 12/20
84/63 + 72/20 is 74/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
84/63 = 84 × 20/63 × 20 = 1680/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
72/20 = 72 × 63/20 × 63 = 4536/1260 - Add the two like fractions:
1680/1260 + 4536/1260 = 1680 + 4536/1260 = 6216/1260 - 6216/1260 simplified gives 74/15
- So, 84/63 + 72/20 = 74/15
In mixed form: 414/15
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