Add 81/56 and 70/90
1st number: 1 25/56, 2nd number: 70/90
81/56 + 70/90 is 1121/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
81/56 = 81 × 45/56 × 45 = 3645/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
70/90 = 70 × 28/90 × 28 = 1960/2520 - Add the two like fractions:
3645/2520 + 1960/2520 = 3645 + 1960/2520 = 5605/2520 - 5605/2520 simplified gives 1121/504
- So, 81/56 + 70/90 = 1121/504
In mixed form: 2113/504
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