Subtract 20/7 from 75/80
1st number: 75/80, 2nd number: 2 6/7
75/80 - 20/7 is -215/112.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
75/80 = 75 × 7/80 × 7 = 525/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
20/7 = 20 × 80/7 × 80 = 1600/560 - Subtract the two like fractions:
525/560 - 1600/560 = 525 - 1600/560 = -1075/560 - After reducing the fraction, the answer is -215/112
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