Subtract 45/80 from 12/45
12/45 - 45/80 is -71/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
12/45 = 12 × 16/45 × 16 = 192/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720 - Subtract the two like fractions:
192/720 - 405/720 = 192 - 405/720 = -213/720 - After reducing the fraction, the answer is -71/240
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