Subtract 20/14 from 70/80
1st number: 70/80, 2nd number: 1 6/14
70/80 - 20/14 is -31/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 14 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Likewise, for the 2nd fraction, since 14 × 40 = 560,
20/14 = 20 × 40/14 × 40 = 800/560 - Subtract the two like fractions:
490/560 - 800/560 = 490 - 800/560 = -310/560 - After reducing the fraction, the answer is -31/56
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