Subtract 7/90 from 42/25
1st number: 1 17/25, 2nd number: 7/90
42/25 - 7/90 is 721/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
42/25 = 42 × 18/25 × 18 = 756/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
7/90 = 7 × 5/90 × 5 = 35/450 - Subtract the two like fractions:
756/450 - 35/450 = 756 - 35/450 = 721/450 - In mixed form: 1271/450
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