Subtract 30/80 from 12/56
12/56 - 30/80 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
12/56 = 12 × 10/56 × 10 = 120/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Subtract the two like fractions:
120/560 - 210/560 = 120 - 210/560 = -90/560 - After reducing the fraction, the answer is -9/56
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