Subtract 21/4 from 90/6
1st number: 15 0/6, 2nd number: 5 1/4
90/6 - 21/4 is 39/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 6 × 2 = 12,
90/6 = 90 × 2/6 × 2 = 180/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
21/4 = 21 × 3/4 × 3 = 63/12 - Subtract the two like fractions:
180/12 - 63/12 = 180 - 63/12 = 117/12 - After reducing the fraction, the answer is 39/4
- In mixed form: 93/4
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