Add 21/20 and 45/63
1st number: 1 1/20, 2nd number: 45/63
21/20 + 45/63 is 247/140.
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,
21/20 = 21 × 63/20 × 63 = 1323/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
45/63 = 45 × 20/63 × 20 = 900/1260 - Add the two like fractions:
1323/1260 + 900/1260 = 1323 + 900/1260 = 2223/1260 - 2223/1260 simplified gives 247/140
- So, 21/20 + 45/63 = 247/140
In mixed form: 1107/140
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