Add 81/27 and 90/63
1st number: 3 0/27, 2nd number: 1 27/63
81/27 + 90/63 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
81/27 = 81 × 7/27 × 7 = 567/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
90/63 = 90 × 3/63 × 3 = 270/189 - Add the two like fractions:
567/189 + 270/189 = 567 + 270/189 = 837/189 - 837/189 simplified gives 31/7
- So, 81/27 + 90/63 = 31/7
In mixed form: 43/7
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