Subtract 30/18 from 72/14
1st number: 5 2/14, 2nd number: 1 12/18
72/14 - 30/18 is 73/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
72/14 = 72 × 9/14 × 9 = 648/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Subtract the two like fractions:
648/126 - 210/126 = 648 - 210/126 = 438/126 - After reducing the fraction, the answer is 73/21
- In mixed form: 310/21
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