Subtract 27/21 from 90/10
1st number: 9 0/10, 2nd number: 1 6/21
90/10 - 27/21 is 54/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
90/10 = 90 × 21/10 × 21 = 1890/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
27/21 = 27 × 10/21 × 10 = 270/210 - Subtract the two like fractions:
1890/210 - 270/210 = 1890 - 270/210 = 1620/210 - After reducing the fraction, the answer is 54/7
- In mixed form: 75/7
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