Subtract 45/40 from 30/72
1st number: 30/72, 2nd number: 1 5/40
30/72 - 45/40 is -17/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
30/72 = 30 × 5/72 × 5 = 150/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
45/40 = 45 × 9/40 × 9 = 405/360 - Subtract the two like fractions:
150/360 - 405/360 = 150 - 405/360 = -255/360 - After reducing the fraction, the answer is -17/24
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