Add 81/7 and 90/27
1st number: 11 4/7, 2nd number: 3 9/27
81/7 + 90/27 is 313/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
81/7 = 81 × 27/7 × 27 = 2187/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189 - Add the two like fractions:
2187/189 + 630/189 = 2187 + 630/189 = 2817/189 - 2817/189 simplified gives 313/21
- So, 81/7 + 90/27 = 313/21
In mixed form: 1419/21
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