Subtract 12/80 from 3/45
3/45 - 12/80 is -1/12.
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,
3/45 = 3 × 16/45 × 16 = 48/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
12/80 = 12 × 9/80 × 9 = 108/720 - Subtract the two like fractions:
48/720 - 108/720 = 48 - 108/720 = -60/720 - After reducing the fraction, the answer is -1/12
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