Subtract 30/75 from 3/90
3/90 - 30/75 is -11/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
3/90 = 3 × 5/90 × 5 = 15/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
30/75 = 30 × 6/75 × 6 = 180/450 - Subtract the two like fractions:
15/450 - 180/450 = 15 - 180/450 = -165/450 - After reducing the fraction, the answer is -11/30
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