Subtract 90/18 from 72/10
1st number: 7 2/10, 2nd number: 5 0/18
72/10 - 90/18 is 11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Subtract the two like fractions:
648/90 - 450/90 = 648 - 450/90 = 198/90 - After reducing the fraction, the answer is 11/5
- In mixed form: 21/5
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