Answers

Subtract 2/4 from 28/70

28/70 - 2/4 is -1/10.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 4 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   28/70 = 28 × 2/70 × 2 = 56/140
3. Likewise, for the 2nd fraction, since 4 × 35 = 140,
   2/4 = 2 × 35/4 × 35 = 70/140
4. Subtract the two like fractions:
   56/140 - 70/140 = 56 - 70/140 = -14/140
5. After reducing the fraction, the answer is -1/10

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