Subtract 9/12 from 90/30
1st number: 3 0/30, 2nd number: 9/12
90/30 - 9/12 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Subtract the two like fractions:
180/60 - 45/60 = 180 - 45/60 = 135/60 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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