Add 72/63 and 21/81
1st number: 1 9/63, 2nd number: 21/81
72/63 + 21/81 is 265/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
72/63 = 72 × 9/63 × 9 = 648/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
21/81 = 21 × 7/81 × 7 = 147/567 - Add the two like fractions:
648/567 + 147/567 = 648 + 147/567 = 795/567 - 795/567 simplified gives 265/189
- So, 72/63 + 21/81 = 265/189
In mixed form: 176/189
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