Subtract 72/80 from 90/2
1st number: 45 0/2, 2nd number: 72/80
90/2 - 72/80 is 441/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
90/2 = 90 × 40/2 × 40 = 3600/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Subtract the two like fractions:
3600/80 - 72/80 = 3600 - 72/80 = 3528/80 - After reducing the fraction, the answer is 441/10
- In mixed form: 441/10
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