Answers

Subtract 40/80 from 75/70

1^st number: 1 5/70, 2^nd number: 40/80

75/70 - 40/80 is 4/7.

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,
   75/70 = 75 × 8/70 × 8 = 600/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   40/80 = 40 × 7/80 × 7 = 280/560
4. Subtract the two like fractions:
   600/560 - 280/560 = 600 - 280/560 = 320/560
5. After reducing the fraction, the answer is 4/7

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