Answers

Subtract 75/80 from 3/70

3/70 - 75/80 is -501/560.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 70 × 8 = 560,
   3/70 = 3 × 8/70 × 8 = 24/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   75/80 = 75 × 7/80 × 7 = 525/560
4. Subtract the two like fractions:
   24/560 - 525/560 = 24 - 525/560 = -501/560

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