Subtract 45/80 from 75/42
1st number: 1 33/42, 2nd number: 45/80
75/42 - 45/80 is 137/112.
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,
75/42 = 75 × 40/42 × 40 = 3000/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
45/80 = 45 × 21/80 × 21 = 945/1680 - Subtract the two like fractions:
3000/1680 - 945/1680 = 3000 - 945/1680 = 2055/1680 - After reducing the fraction, the answer is 137/112
- In mixed form: 125/112
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