Subtract 20/45 from 54/36
1st number: 1 18/36, 2nd number: 20/45
54/36 - 20/45 is 19/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
54/36 = 54 × 5/36 × 5 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Subtract the two like fractions:
270/180 - 80/180 = 270 - 80/180 = 190/180 - After reducing the fraction, the answer is 19/18
- In mixed form: 11/18
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