Subtract 12/20 from 80/45
1st number: 1 35/45, 2nd number: 12/20
80/45 - 12/20 is 53/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
80/45 = 80 × 4/45 × 4 = 320/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Subtract the two like fractions:
320/180 - 108/180 = 320 - 108/180 = 212/180 - After reducing the fraction, the answer is 53/45
- In mixed form: 18/45
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