Subtract 1/80 from 7/90
7/90 - 1/80 is 47/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
7/90 = 7 × 8/90 × 8 = 56/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Subtract the two like fractions:
56/720 - 9/720 = 56 - 9/720 = 47/720
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