Subtract 18/28 from 45/42
1st number: 1 3/42, 2nd number: 18/28
45/42 - 18/28 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
45/42 = 45 × 2/42 × 2 = 90/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
18/28 = 18 × 3/28 × 3 = 54/84 - Subtract the two like fractions:
90/84 - 54/84 = 90 - 54/84 = 36/84 - After reducing the fraction, the answer is 3/7
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