Add 30/21 and 75/63
1st number: 1 9/21, 2nd number: 1 12/63
30/21 + 75/63 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
30/21 = 30 × 3/21 × 3 = 90/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
75/63 = 75 × 1/63 × 1 = 75/63 - Add the two like fractions:
90/63 + 75/63 = 90 + 75/63 = 165/63 - 165/63 simplified gives 55/21
- So, 30/21 + 75/63 = 55/21
In mixed form: 213/21
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