Subtract 72/10 from 42/14
1st number: 3 0/14, 2nd number: 7 2/10
42/14 - 72/10 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
42/14 = 42 × 5/14 × 5 = 210/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
72/10 = 72 × 7/10 × 7 = 504/70 - Subtract the two like fractions:
210/70 - 504/70 = 210 - 504/70 = -294/70 - After reducing the fraction, the answer is -21/5
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