Subtract 30/28 from 28/70
1st number: 28/70, 2nd number: 1 2/28
28/70 - 30/28 is -47/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
28/70 = 28 × 2/70 × 2 = 56/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140 - Subtract the two like fractions:
56/140 - 150/140 = 56 - 150/140 = -94/140 - After reducing the fraction, the answer is -47/70
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