Subtract 18/15 from 15/70
1st number: 15/70, 2nd number: 1 3/15
15/70 - 18/15 is -69/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
18/15 = 18 × 14/15 × 14 = 252/210 - Subtract the two like fractions:
45/210 - 252/210 = 45 - 252/210 = -207/210 - After reducing the fraction, the answer is -69/70
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