Subtract 20/80 from 75/70
1st number: 1 5/70, 2nd number: 20/80
75/70 - 20/80 is 23/28.
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,
75/70 = 75 × 8/70 × 8 = 600/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
20/80 = 20 × 7/80 × 7 = 140/560 - Subtract the two like fractions:
600/560 - 140/560 = 600 - 140/560 = 460/560 - After reducing the fraction, the answer is 23/28
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