Add 81/15 and 54/8
1st number: 5 6/15, 2nd number: 6 6/8
81/15 + 54/8 is 243/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
81/15 = 81 × 8/15 × 8 = 648/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
54/8 = 54 × 15/8 × 15 = 810/120 - Add the two like fractions:
648/120 + 810/120 = 648 + 810/120 = 1458/120 - 1458/120 simplified gives 243/20
- So, 81/15 + 54/8 = 243/20
In mixed form: 123/20
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