Add 60/80 and 81/90
60/80 + 81/90 is 33/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
60/80 = 60 × 9/80 × 9 = 540/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
81/90 = 81 × 8/90 × 8 = 648/720 - Add the two like fractions:
540/720 + 648/720 = 540 + 648/720 = 1188/720 - 1188/720 simplified gives 33/20
- So, 60/80 + 81/90 = 33/20
In mixed form: 113/20
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