Subtract 12/40 from 72/9
1st number: 8 0/9, 2nd number: 12/40
72/9 - 12/40 is 77/10.
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,
72/9 = 72 × 40/9 × 40 = 2880/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Subtract the two like fractions:
2880/360 - 108/360 = 2880 - 108/360 = 2772/360 - After reducing the fraction, the answer is 77/10
- In mixed form: 77/10
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