Add 18/63 and 63/21
1st number: 18/63, 2nd number: 3 0/21
18/63 + 63/21 is 23/7.
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,
18/63 = 18 × 1/63 × 1 = 18/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
63/21 = 63 × 3/21 × 3 = 189/63 - Add the two like fractions:
18/63 + 189/63 = 18 + 189/63 = 207/63 - 207/63 simplified gives 23/7
- So, 18/63 + 63/21 = 23/7
In mixed form: 32/7
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