Subtract 72/9 from 40/80
1st number: 40/80, 2nd number: 8 0/9
40/80 - 72/9 is -15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
40/80 = 40 × 9/80 × 9 = 360/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
72/9 = 72 × 80/9 × 80 = 5760/720 - Subtract the two like fractions:
360/720 - 5760/720 = 360 - 5760/720 = -5400/720 - After reducing the fraction, the answer is -15/2
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