Subtract 18/5 from 42/70
1st number: 42/70, 2nd number: 3 3/5
42/70 - 18/5 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
18/5 = 18 × 14/5 × 14 = 252/70 - Subtract the two like fractions:
42/70 - 252/70 = 42 - 252/70 = -210/70 - After reducing the fraction, the answer is -3/1
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