Subtract 28/10 from 30/70
1st number: 30/70, 2nd number: 2 8/10
30/70 - 28/10 is -83/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
30/70 = 30 × 1/70 × 1 = 30/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
28/10 = 28 × 7/10 × 7 = 196/70 - Subtract the two like fractions:
30/70 - 196/70 = 30 - 196/70 = -166/70 - After reducing the fraction, the answer is -83/35
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