Subtract 42/63 from 7/15
7/15 - 42/63 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
7/15 = 7 × 21/15 × 21 = 147/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Subtract the two like fractions:
147/315 - 210/315 = 147 - 210/315 = -63/315 - After reducing the fraction, the answer is -1/5
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