Subtract 18/40 from 45/28
1st number: 1 17/28, 2nd number: 18/40
45/28 - 18/40 is 81/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
45/28 = 45 × 10/28 × 10 = 450/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Subtract the two like fractions:
450/280 - 126/280 = 450 - 126/280 = 324/280 - After reducing the fraction, the answer is 81/70
- In mixed form: 111/70
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