Subtract 20/90 from 6/4
1st number: 1 2/4, 2nd number: 20/90
6/4 - 20/90 is 23/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
6/4 = 6 × 45/4 × 45 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
270/180 - 40/180 = 270 - 40/180 = 230/180 - After reducing the fraction, the answer is 23/18
- In mixed form: 15/18
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