Subtract 7/45 from 20/5
1st number: 4 0/5, 2nd number: 7/45
20/5 - 7/45 is 173/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
20/5 = 20 × 9/5 × 9 = 180/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
7/45 = 7 × 1/45 × 1 = 7/45 - Subtract the two like fractions:
180/45 - 7/45 = 180 - 7/45 = 173/45 - In mixed form: 338/45
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