Subtract 27/8 from 90/72
1st number: 1 18/72, 2nd number: 3 3/8
90/72 - 27/8 is -17/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
27/8 = 27 × 9/8 × 9 = 243/72 - Subtract the two like fractions:
90/72 - 243/72 = 90 - 243/72 = -153/72 - After reducing the fraction, the answer is -17/8
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