Subtract 20/90 from 75/12
1st number: 6 3/12, 2nd number: 20/90
75/12 - 20/90 is 217/36.
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,
75/12 = 75 × 15/12 × 15 = 1125/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
1125/180 - 40/180 = 1125 - 40/180 = 1085/180 - After reducing the fraction, the answer is 217/36
- In mixed form: 61/36
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