Subtract 54/12 from 20/90
1st number: 20/90, 2nd number: 4 6/12
20/90 - 54/12 is -77/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
54/12 = 54 × 15/12 × 15 = 810/180 - Subtract the two like fractions:
40/180 - 810/180 = 40 - 810/180 = -770/180 - After reducing the fraction, the answer is -77/18
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