Add 21/20 and 42/63
1st number: 1 1/20, 2nd number: 42/63
21/20 + 42/63 is 103/60.
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,
42/63 = 42 × 20/63 × 20 = 840/1260 - Add the two like fractions:
1323/1260 + 840/1260 = 1323 + 840/1260 = 2163/1260 - 2163/1260 simplified gives 103/60
- So, 21/20 + 42/63 = 103/60
In mixed form: 143/60
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