Add 90/8 and 81/72
1st number: 11 2/8, 2nd number: 1 9/72
90/8 + 81/72 is 99/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
90/8 = 90 × 9/8 × 9 = 810/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Add the two like fractions:
810/72 + 81/72 = 810 + 81/72 = 891/72 - 891/72 simplified gives 99/8
- So, 90/8 + 81/72 = 99/8
In mixed form: 123/8
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