Subtract 18/8 from 18/28
1st number: 18/28, 2nd number: 2 2/8
18/28 - 18/8 is -45/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
18/28 = 18 × 2/28 × 2 = 36/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
18/8 = 18 × 7/8 × 7 = 126/56 - Subtract the two like fractions:
36/56 - 126/56 = 36 - 126/56 = -90/56 - After reducing the fraction, the answer is -45/28
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