Answers

Subtract 16/70 from 7/80

7/80 - 16/70 is -79/560.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 70 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 80 × 7 = 560,
   7/80 = 7 × 7/80 × 7 = 49/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   16/70 = 16 × 8/70 × 8 = 128/560
4. Subtract the two like fractions:
   49/560 - 128/560 = 49 - 128/560 = -79/560

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