Subtract 45/63 from 18/80
18/80 - 45/63 is -137/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
18/80 = 18 × 63/80 × 63 = 1134/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
45/63 = 45 × 80/63 × 80 = 3600/5040 - Subtract the two like fractions:
1134/5040 - 3600/5040 = 1134 - 3600/5040 = -2466/5040 - After reducing the fraction, the answer is -137/280
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