Add 81/90 and 90/56
1st number: 81/90, 2nd number: 1 34/56
81/90 + 90/56 is 351/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
81/90 = 81 × 28/90 × 28 = 2268/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
90/56 = 90 × 45/56 × 45 = 4050/2520 - Add the two like fractions:
2268/2520 + 4050/2520 = 2268 + 4050/2520 = 6318/2520 - 6318/2520 simplified gives 351/140
- So, 81/90 + 90/56 = 351/140
In mixed form: 271/140
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