Subtract 30/10 from 42/54
1st number: 42/54, 2nd number: 3 0/10
42/54 - 30/10 is -20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
30/10 = 30 × 27/10 × 27 = 810/270 - Subtract the two like fractions:
210/270 - 810/270 = 210 - 810/270 = -600/270 - After reducing the fraction, the answer is -20/9
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