Subtract 9/70 from 4/80
4/80 - 9/70 is -11/140.
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,
4/80 = 4 × 7/80 × 7 = 28/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
9/70 = 9 × 8/70 × 8 = 72/560 - Subtract the two like fractions:
28/560 - 72/560 = 28 - 72/560 = -44/560 - After reducing the fraction, the answer is -11/140
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