Subtract 42/10 from 20/9
1st number: 2 2/9, 2nd number: 4 2/10
20/9 - 42/10 is -89/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
20/9 = 20 × 10/9 × 10 = 200/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90 - Subtract the two like fractions:
200/90 - 378/90 = 200 - 378/90 = -178/90 - After reducing the fraction, the answer is -89/45
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