Subtract 18/45 from 42/2
1st number: 21 0/2, 2nd number: 18/45
42/2 - 18/45 is 103/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
42/2 = 42 × 45/2 × 45 = 1890/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
18/45 = 18 × 2/45 × 2 = 36/90 - Subtract the two like fractions:
1890/90 - 36/90 = 1890 - 36/90 = 1854/90 - After reducing the fraction, the answer is 103/5
- In mixed form: 203/5
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