Subtract 21/30 from 45/5
1st number: 9 0/5, 2nd number: 21/30
45/5 - 21/30 is 83/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
45/5 = 45 × 6/5 × 6 = 270/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Subtract the two like fractions:
270/30 - 21/30 = 270 - 21/30 = 249/30 - After reducing the fraction, the answer is 83/10
- In mixed form: 83/10
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