Subtract 12/18 from 15/35
15/35 - 12/18 is -5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
15/35 = 15 × 18/35 × 18 = 270/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
12/18 = 12 × 35/18 × 35 = 420/630 - Subtract the two like fractions:
270/630 - 420/630 = 270 - 420/630 = -150/630 - After reducing the fraction, the answer is -5/21
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