Subtract 42/28 from 72/70
1st number: 1 2/70, 2nd number: 1 14/28
72/70 - 42/28 is -33/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Subtract the two like fractions:
144/140 - 210/140 = 144 - 210/140 = -66/140 - After reducing the fraction, the answer is -33/70
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