Subtract 90/21 from 12/6
1st number: 2 0/6, 2nd number: 4 6/21
12/6 - 90/21 is -16/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
90/21 = 90 × 2/21 × 2 = 180/42 - Subtract the two like fractions:
84/42 - 180/42 = 84 - 180/42 = -96/42 - After reducing the fraction, the answer is -16/7
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