Subtract 54/72 from 42/14
1st number: 3 0/14, 2nd number: 54/72
42/14 - 54/72 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
42/14 = 42 × 36/14 × 36 = 1512/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Subtract the two like fractions:
1512/504 - 378/504 = 1512 - 378/504 = 1134/504 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
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