Subtract 45/70 from 9/80
9/80 - 45/70 is -297/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 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 70 × 8 = 560,
45/70 = 45 × 8/70 × 8 = 360/560 - Subtract the two like fractions:
63/560 - 360/560 = 63 - 360/560 = -297/560
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