Subtract 7/80 from 81/18
1st number: 4 9/18, 2nd number: 7/80
81/18 - 7/80 is 353/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
81/18 = 81 × 40/18 × 40 = 3240/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Subtract the two like fractions:
3240/720 - 63/720 = 3240 - 63/720 = 3177/720 - After reducing the fraction, the answer is 353/80
- In mixed form: 433/80
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