Subtract 20/90 from 45/12
1st number: 3 9/12, 2nd number: 20/90
45/12 - 20/90 is 127/36.
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,
45/12 = 45 × 15/12 × 15 = 675/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
675/180 - 40/180 = 675 - 40/180 = 635/180 - After reducing the fraction, the answer is 127/36
- In mixed form: 319/36
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