Subtract 28/5 from 42/30
1st number: 1 12/30, 2nd number: 5 3/5
42/30 - 28/5 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
28/5 = 28 × 6/5 × 6 = 168/30 - Subtract the two like fractions:
42/30 - 168/30 = 42 - 168/30 = -126/30 - After reducing the fraction, the answer is -21/5
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