Subtract 90/54 from 18/15
1st number: 1 3/15, 2nd number: 1 36/54
18/15 - 90/54 is -7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
18/15 = 18 × 18/15 × 18 = 324/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
90/54 = 90 × 5/54 × 5 = 450/270 - Subtract the two like fractions:
324/270 - 450/270 = 324 - 450/270 = -126/270 - After reducing the fraction, the answer is -7/15
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