Subtract 4/7 from 15/30
15/30 - 4/7 is -1/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 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 7 × 30 = 210,
4/7 = 4 × 30/7 × 30 = 120/210 - Subtract the two like fractions:
105/210 - 120/210 = 105 - 120/210 = -15/210 - After reducing the fraction, the answer is -1/14
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