Subtract 42/40 from 45/9
1st number: 5 0/9, 2nd number: 1 2/40
45/9 - 42/40 is 79/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
45/9 = 45 × 40/9 × 40 = 1800/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
42/40 = 42 × 9/40 × 9 = 378/360 - Subtract the two like fractions:
1800/360 - 378/360 = 1800 - 378/360 = 1422/360 - After reducing the fraction, the answer is 79/20
- In mixed form: 319/20
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