Subtract 90/12 from 35/21
1st number: 1 14/21, 2nd number: 7 6/12
35/21 - 90/12 is -35/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
35/21 = 35 × 4/21 × 4 = 140/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Subtract the two like fractions:
140/84 - 630/84 = 140 - 630/84 = -490/84 - After reducing the fraction, the answer is -35/6
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