Subtract 1/90 from 25/75
25/75 - 1/90 is 29/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
25/75 = 25 × 6/75 × 6 = 150/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
1/90 = 1 × 5/90 × 5 = 5/450 - Subtract the two like fractions:
150/450 - 5/450 = 150 - 5/450 = 145/450 - After reducing the fraction, the answer is 29/90
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