Subtract 45/80 from 9/49
9/49 - 45/80 is -297/784.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
9/49 = 9 × 80/49 × 80 = 720/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
45/80 = 45 × 49/80 × 49 = 2205/3920 - Subtract the two like fractions:
720/3920 - 2205/3920 = 720 - 2205/3920 = -1485/3920 - After reducing the fraction, the answer is -297/784
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