Subtract 3/90 from 27/21
1st number: 1 6/21, 2nd number: 3/90
27/21 - 3/90 is 263/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
27/21 = 27 × 30/21 × 30 = 810/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Subtract the two like fractions:
810/630 - 21/630 = 810 - 21/630 = 789/630 - After reducing the fraction, the answer is 263/210
- In mixed form: 153/210
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