Subtract 40/12 from 3/45
1st number: 3/45, 2nd number: 3 4/12
3/45 - 40/12 is -49/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
40/12 = 40 × 15/12 × 15 = 600/180 - Subtract the two like fractions:
12/180 - 600/180 = 12 - 600/180 = -588/180 - After reducing the fraction, the answer is -49/15
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