Answers

Subtract 3/80 from 30/70

30/70 - 3/80 is 219/560.

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,
   30/70 = 30 × 8/70 × 8 = 240/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   3/80 = 3 × 7/80 × 7 = 21/560
4. Subtract the two like fractions:
   240/560 - 21/560 = 240 - 21/560 = 219/560

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