Subtract 6/90 from 12/45
12/45 - 6/90 is 1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
12/45 = 12 × 2/45 × 2 = 24/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
6/90 = 6 × 1/90 × 1 = 6/90 - Subtract the two like fractions:
24/90 - 6/90 = 24 - 6/90 = 18/90 - After reducing the fraction, the answer is 1/5
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