Subtract 45/40 from 20/75
1st number: 20/75, 2nd number: 1 5/40
20/75 - 45/40 is -103/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 40 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 75 × 8 = 600,
20/75 = 20 × 8/75 × 8 = 160/600 - Likewise, for the 2nd fraction, since 40 × 15 = 600,
45/40 = 45 × 15/40 × 15 = 675/600 - Subtract the two like fractions:
160/600 - 675/600 = 160 - 675/600 = -515/600 - After reducing the fraction, the answer is -103/120
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