Subtract 21/90 from 7/6
1st number: 1 1/6, 2nd number: 21/90
7/6 - 21/90 is 14/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
7/6 = 7 × 15/6 × 15 = 105/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Subtract the two like fractions:
105/90 - 21/90 = 105 - 21/90 = 84/90 - After reducing the fraction, the answer is 14/15
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