Subtract 21/45 from 30/6
1st number: 5 0/6, 2nd number: 21/45
30/6 - 21/45 is 68/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
30/6 = 30 × 15/6 × 15 = 450/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
450/90 - 42/90 = 450 - 42/90 = 408/90 - After reducing the fraction, the answer is 68/15
- In mixed form: 48/15
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