Subtract 30/21 from 12/6
1st number: 2 0/6, 2nd number: 1 9/21
12/6 - 30/21 is 4/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
30/21 = 30 × 2/21 × 2 = 60/42 - Subtract the two like fractions:
84/42 - 60/42 = 84 - 60/42 = 24/42 - After reducing the fraction, the answer is 4/7
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