Subtract 20/18 from 72/4
1st number: 18 0/4, 2nd number: 1 2/18
72/4 - 20/18 is 152/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
72/4 = 72 × 9/4 × 9 = 648/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
20/18 = 20 × 2/18 × 2 = 40/36 - Subtract the two like fractions:
648/36 - 40/36 = 648 - 40/36 = 608/36 - After reducing the fraction, the answer is 152/9
- In mixed form: 168/9
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