Add 42/63 and 45/21
1st number: 42/63, 2nd number: 2 3/21
42/63 + 45/21 is 59/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
45/21 = 45 × 3/21 × 3 = 135/63 - Add the two like fractions:
42/63 + 135/63 = 42 + 135/63 = 177/63 - 177/63 simplified gives 59/21
- So, 42/63 + 45/21 = 59/21
In mixed form: 217/21
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