Subtract 10/15 from 90/20
1st number: 4 10/20, 2nd number: 10/15
90/20 - 10/15 is 23/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
90/20 = 90 × 3/20 × 3 = 270/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
10/15 = 10 × 4/15 × 4 = 40/60 - Subtract the two like fractions:
270/60 - 40/60 = 270 - 40/60 = 230/60 - After reducing the fraction, the answer is 23/6
- In mixed form: 35/6
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