Subtract 20/90 from 72/10
1st number: 7 2/10, 2nd number: 20/90
72/10 - 20/90 is 314/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 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 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Subtract the two like fractions:
648/90 - 20/90 = 648 - 20/90 = 628/90 - After reducing the fraction, the answer is 314/45
- In mixed form: 644/45
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