Subtract 54/42 from 12/30
1st number: 12/30, 2nd number: 1 12/42
12/30 - 54/42 is -31/35.
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,
12/30 = 12 × 7/30 × 7 = 84/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Subtract the two like fractions:
84/210 - 270/210 = 84 - 270/210 = -186/210 - After reducing the fraction, the answer is -31/35
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