Subtract 90/30 from 21/4
1st number: 5 1/4, 2nd number: 3 0/30
21/4 - 90/30 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
21/4 = 21 × 15/4 × 15 = 315/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Subtract the two like fractions:
315/60 - 180/60 = 315 - 180/60 = 135/60 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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