Answers

Subtract 15/70 from 8/40

8/40 - 15/70 is -1/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 70 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   8/40 = 8 × 7/40 × 7 = 56/280
3. Likewise, for the 2nd fraction, since 70 × 4 = 280,
   15/70 = 15 × 4/70 × 4 = 60/280
4. Subtract the two like fractions:
   56/280 - 60/280 = 56 - 60/280 = -4/280
5. After reducing the fraction, the answer is -1/70

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