Subtract 48/80 from 81/90
81/90 - 48/80 is 3/10.
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,
81/90 = 81 × 8/90 × 8 = 648/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
48/80 = 48 × 9/80 × 9 = 432/720 - Subtract the two like fractions:
648/720 - 432/720 = 648 - 432/720 = 216/720 - After reducing the fraction, the answer is 3/10
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