Subtract 80/70 from 40/28
1st number: 1 12/28, 2nd number: 1 10/70
40/28 - 80/70 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
40/28 = 40 × 5/28 × 5 = 200/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
80/70 = 80 × 2/70 × 2 = 160/140 - Subtract the two like fractions:
200/140 - 160/140 = 200 - 160/140 = 40/140 - After reducing the fraction, the answer is 2/7
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