Subtract 72/70 from 25/42
1st number: 25/42, 2nd number: 1 2/70
25/42 - 72/70 is -13/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
72/70 = 72 × 3/70 × 3 = 216/210 - Subtract the two like fractions:
125/210 - 216/210 = 125 - 216/210 = -91/210 - After reducing the fraction, the answer is -13/30
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