Subtract 42/18 from 45/25
1st number: 1 20/25, 2nd number: 2 6/18
45/25 - 42/18 is -8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
45/25 = 45 × 18/25 × 18 = 810/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
42/18 = 42 × 25/18 × 25 = 1050/450 - Subtract the two like fractions:
810/450 - 1050/450 = 810 - 1050/450 = -240/450 - After reducing the fraction, the answer is -8/15
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