Add 8/7 and 90/81
1st number: 1 1/7, 2nd number: 1 9/81
8/7 + 90/81 is 142/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
8/7 = 8 × 81/7 × 81 = 648/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
90/81 = 90 × 7/81 × 7 = 630/567 - Add the two like fractions:
648/567 + 630/567 = 648 + 630/567 = 1278/567 - 1278/567 simplified gives 142/63
- So, 8/7 + 90/81 = 142/63
In mixed form: 216/63
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