Subtract 75/18 from 40/42
1st number: 40/42, 2nd number: 4 3/18
40/42 - 75/18 is -45/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
75/18 = 75 × 7/18 × 7 = 525/126 - Subtract the two like fractions:
120/126 - 525/126 = 120 - 525/126 = -405/126 - After reducing the fraction, the answer is -45/14
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