Subtract 18/35 from 15/30
15/30 - 18/35 is -1/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
18/35 = 18 × 6/35 × 6 = 108/210 - Subtract the two like fractions:
105/210 - 108/210 = 105 - 108/210 = -3/210 - After reducing the fraction, the answer is -1/70
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