Subtract 84/90 from 5/12
5/12 - 84/90 is -31/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
5/12 = 5 × 15/12 × 15 = 75/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
84/90 = 84 × 2/90 × 2 = 168/180 - Subtract the two like fractions:
75/180 - 168/180 = 75 - 168/180 = -93/180 - After reducing the fraction, the answer is -31/60
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