Subtract 18/24 from 7/28
7/28 - 18/24 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 28 × 6 = 168,
7/28 = 7 × 6/28 × 6 = 42/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
18/24 = 18 × 7/24 × 7 = 126/168 - Subtract the two like fractions:
42/168 - 126/168 = 42 - 126/168 = -84/168 - After reducing the fraction, the answer is -1/2
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