Subtract 3/90 from 84/40
1st number: 2 4/40, 2nd number: 3/90
84/40 - 3/90 is 31/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
84/40 = 84 × 9/40 × 9 = 756/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
3/90 = 3 × 4/90 × 4 = 12/360 - Subtract the two like fractions:
756/360 - 12/360 = 756 - 12/360 = 744/360 - After reducing the fraction, the answer is 31/15
- In mixed form: 21/15
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