Subtract 18/8 from 25/18
1st number: 1 7/18, 2nd number: 2 2/8
25/18 - 18/8 is -31/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
25/18 = 25 × 4/18 × 4 = 100/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
18/8 = 18 × 9/8 × 9 = 162/72 - Subtract the two like fractions:
100/72 - 162/72 = 100 - 162/72 = -62/72 - After reducing the fraction, the answer is -31/36
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