Subtract 3/72 from 90/28
1st number: 3 6/28, 2nd number: 3/72
90/28 - 3/72 is 533/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
90/28 = 90 × 18/28 × 18 = 1620/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Subtract the two like fractions:
1620/504 - 21/504 = 1620 - 21/504 = 1599/504 - After reducing the fraction, the answer is 533/168
- In mixed form: 329/168
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