Subtract 1/90 from 30/20
1st number: 1 10/20, 2nd number: 1/90
30/20 - 1/90 is 67/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
1/90 = 1 × 2/90 × 2 = 2/180 - Subtract the two like fractions:
270/180 - 2/180 = 270 - 2/180 = 268/180 - After reducing the fraction, the answer is 67/45
- In mixed form: 122/45
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