Subtract 18/45 from 25/2
1st number: 12 1/2, 2nd number: 18/45
25/2 - 18/45 is 121/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
25/2 = 25 × 45/2 × 45 = 1125/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
18/45 = 18 × 2/45 × 2 = 36/90 - Subtract the two like fractions:
1125/90 - 36/90 = 1125 - 36/90 = 1089/90 - After reducing the fraction, the answer is 121/10
- In mixed form: 121/10
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