Subtract 40/12 from 54/45
1st number: 1 9/45, 2nd number: 3 4/12
54/45 - 40/12 is -32/15.
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,
54/45 = 54 × 4/45 × 4 = 216/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
40/12 = 40 × 15/12 × 15 = 600/180 - Subtract the two like fractions:
216/180 - 600/180 = 216 - 600/180 = -384/180 - After reducing the fraction, the answer is -32/15
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