Subtract 12/30 from 1/90
1/90 - 12/30 is -7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
12/30 = 12 × 3/30 × 3 = 36/90 - Subtract the two like fractions:
1/90 - 36/90 = 1 - 36/90 = -35/90 - After reducing the fraction, the answer is -7/18
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