Subtract 40/35 from 18/28
1st number: 18/28, 2nd number: 1 5/35
18/28 - 40/35 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
40/35 = 40 × 4/35 × 4 = 160/140 - Subtract the two like fractions:
90/140 - 160/140 = 90 - 160/140 = -70/140 - After reducing the fraction, the answer is -1/2
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