Subtract 12/40 from 18/4
1st number: 4 2/4, 2nd number: 12/40
18/4 - 12/40 is 21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 4 × 10 = 40,
18/4 = 18 × 10/4 × 10 = 180/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
12/40 = 12 × 1/40 × 1 = 12/40 - Subtract the two like fractions:
180/40 - 12/40 = 180 - 12/40 = 168/40 - After reducing the fraction, the answer is 21/5
- In mixed form: 41/5
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