Subtract 72/80 from 90/36
1st number: 2 18/36, 2nd number: 72/80
90/36 - 72/80 is 8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
90/36 = 90 × 20/36 × 20 = 1800/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
72/80 = 72 × 9/80 × 9 = 648/720 - Subtract the two like fractions:
1800/720 - 648/720 = 1800 - 648/720 = 1152/720 - After reducing the fraction, the answer is 8/5
- In mixed form: 13/5
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Related: 90/72-72/80