Subtract 28/7 from 18/5
1st number: 3 3/5, 2nd number: 4 0/7
18/5 - 28/7 is -2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
18/5 = 18 × 7/5 × 7 = 126/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
28/7 = 28 × 5/7 × 5 = 140/35 - Subtract the two like fractions:
126/35 - 140/35 = 126 - 140/35 = -14/35 - After reducing the fraction, the answer is -2/5
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