Subtract 90/12 from 28/4
1st number: 7 0/4, 2nd number: 7 6/12
28/4 - 90/12 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
28/4 = 28 × 3/4 × 3 = 84/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
90/12 = 90 × 1/12 × 1 = 90/12 - Subtract the two like fractions:
84/12 - 90/12 = 84 - 90/12 = -6/12 - After reducing the fraction, the answer is -1/2
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