Subtract 5/42 from 45/18
1st number: 2 9/18, 2nd number: 5/42
45/18 - 5/42 is 50/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
45/18 = 45 × 7/18 × 7 = 315/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
5/42 = 5 × 3/42 × 3 = 15/126 - Subtract the two like fractions:
315/126 - 15/126 = 315 - 15/126 = 300/126 - After reducing the fraction, the answer is 50/21
- In mixed form: 28/21
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