Subtract 40/90 from 42/2
1st number: 21 0/2, 2nd number: 40/90
42/2 - 40/90 is 185/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 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 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Subtract the two like fractions:
1890/90 - 40/90 = 1890 - 40/90 = 1850/90 - After reducing the fraction, the answer is 185/9
- In mixed form: 205/9
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