Subtract 75/54 from 42/80
1st number: 42/80, 2nd number: 1 21/54
42/80 - 75/54 is -311/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
42/80 = 42 × 27/80 × 27 = 1134/2160 - Likewise, for the 2nd fraction, since 54 × 40 = 2160,
75/54 = 75 × 40/54 × 40 = 3000/2160 - Subtract the two like fractions:
1134/2160 - 3000/2160 = 1134 - 3000/2160 = -1866/2160 - After reducing the fraction, the answer is -311/360
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