Answers

Subtract 40/70 from 35/80

35/80 - 40/70 is -15/112.

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,
   35/80 = 35 × 7/80 × 7 = 245/560
3. Likewise, for the 2nd fraction, since 70 × 8 = 560,
   40/70 = 40 × 8/70 × 8 = 320/560
4. Subtract the two like fractions:
   245/560 - 320/560 = 245 - 320/560 = -75/560
5. After reducing the fraction, the answer is -15/112

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