Subtract 60/70 from 30/80
30/80 - 60/70 is -27/56.
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,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
60/70 = 60 × 8/70 × 8 = 480/560 - Subtract the two like fractions:
210/560 - 480/560 = 210 - 480/560 = -270/560 - After reducing the fraction, the answer is -27/56
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