Add 18/20 and 81/63
1st number: 18/20, 2nd number: 1 18/63
18/20 + 81/63 is 153/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
18/20 = 18 × 63/20 × 63 = 1134/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
81/63 = 81 × 20/63 × 20 = 1620/1260 - Add the two like fractions:
1134/1260 + 1620/1260 = 1134 + 1620/1260 = 2754/1260 - 2754/1260 simplified gives 153/70
- So, 18/20 + 81/63 = 153/70
In mixed form: 213/70
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