Subtract 12/80 from 28/70
28/70 - 12/80 is 1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
28/70 = 28 × 8/70 × 8 = 224/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
12/80 = 12 × 7/80 × 7 = 84/560 - Subtract the two like fractions:
224/560 - 84/560 = 224 - 84/560 = 140/560 - After reducing the fraction, the answer is 1/4
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