Subtract 15/45 from 7/30
7/30 - 15/45 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
7/30 = 7 × 3/30 × 3 = 21/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
15/45 = 15 × 2/45 × 2 = 30/90 - Subtract the two like fractions:
21/90 - 30/90 = 21 - 30/90 = -9/90 - After reducing the fraction, the answer is -1/10
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