Subtract 18/54 from 12/7
1st number: 1 5/7, 2nd number: 18/54
12/7 - 18/54 is 29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
12/7 = 12 × 54/7 × 54 = 648/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378 - Subtract the two like fractions:
648/378 - 126/378 = 648 - 126/378 = 522/378 - After reducing the fraction, the answer is 29/21
- In mixed form: 18/21
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