Subtract 14/21 from 8/30
8/30 - 14/21 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
14/21 = 14 × 10/21 × 10 = 140/210 - Subtract the two like fractions:
56/210 - 140/210 = 56 - 140/210 = -84/210 - After reducing the fraction, the answer is -2/5
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