Subtract 42/75 from 15/28
15/28 - 42/75 is -17/700.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 28 × 75 = 2100,
15/28 = 15 × 75/28 × 75 = 1125/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
42/75 = 42 × 28/75 × 28 = 1176/2100 - Subtract the two like fractions:
1125/2100 - 1176/2100 = 1125 - 1176/2100 = -51/2100 - After reducing the fraction, the answer is -17/700
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