Subtract 21/35 from 9/80
9/80 - 21/35 is -39/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 35 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560 - Likewise, for the 2nd fraction, since 35 × 16 = 560,
21/35 = 21 × 16/35 × 16 = 336/560 - Subtract the two like fractions:
63/560 - 336/560 = 63 - 336/560 = -273/560 - After reducing the fraction, the answer is -39/80
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