Subtract 20/42 from 54/30
1st number: 1 24/30, 2nd number: 20/42
54/30 - 20/42 is 139/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
54/30 = 54 × 7/30 × 7 = 378/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Subtract the two like fractions:
378/210 - 100/210 = 378 - 100/210 = 278/210 - After reducing the fraction, the answer is 139/105
- In mixed form: 134/105
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