Subtract 90/56 from 12/18
1st number: 12/18, 2nd number: 1 34/56
12/18 - 90/56 is -79/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
12/18 = 12 × 28/18 × 28 = 336/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
90/56 = 90 × 9/56 × 9 = 810/504 - Subtract the two like fractions:
336/504 - 810/504 = 336 - 810/504 = -474/504 - After reducing the fraction, the answer is -79/84
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