Subtract 40/45 from 81/4
1st number: 20 1/4, 2nd number: 40/45
81/4 - 40/45 is 697/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
81/4 = 81 × 45/4 × 45 = 3645/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
40/45 = 40 × 4/45 × 4 = 160/180 - Subtract the two like fractions:
3645/180 - 160/180 = 3645 - 160/180 = 3485/180 - After reducing the fraction, the answer is 697/36
- In mixed form: 1913/36
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