Subtract 4/45 from 7/80
7/80 - 4/45 is -1/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
4/45 = 4 × 16/45 × 16 = 64/720 - Subtract the two like fractions:
63/720 - 64/720 = 63 - 64/720 = -1/720
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