Subtract 30/21 from 8/2
1st number: 4 0/2, 2nd number: 1 9/21
8/2 - 30/21 is 18/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
8/2 = 8 × 21/2 × 21 = 168/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42 - Subtract the two like fractions:
168/42 - 60/42 = 168 - 60/42 = 108/42 - After reducing the fraction, the answer is 18/7
- In mixed form: 24/7
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