Subtract 75/80 from 45/42
1st number: 1 3/42, 2nd number: 75/80
45/42 - 75/80 is 15/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
45/42 = 45 × 40/42 × 40 = 1800/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
75/80 = 75 × 21/80 × 21 = 1575/1680 - Subtract the two like fractions:
1800/1680 - 1575/1680 = 1800 - 1575/1680 = 225/1680 - After reducing the fraction, the answer is 15/112
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