Subtract 3/90 from 1/80
1/80 - 3/90 is -1/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
3/90 = 3 × 8/90 × 8 = 24/720 - Subtract the two like fractions:
9/720 - 24/720 = 9 - 24/720 = -15/720 - After reducing the fraction, the answer is -1/48
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