Subtract 21/63 from 90/75
1st number: 1 15/75, 2nd number: 21/63
90/75 - 21/63 is 13/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 63 is 1575
Next, find the equivalent fraction of both fractional numbers with denominator 1575 - For the 1st fraction, since 75 × 21 = 1575,
90/75 = 90 × 21/75 × 21 = 1890/1575 - Likewise, for the 2nd fraction, since 63 × 25 = 1575,
21/63 = 21 × 25/63 × 25 = 525/1575 - Subtract the two like fractions:
1890/1575 - 525/1575 = 1890 - 525/1575 = 1365/1575 - After reducing the fraction, the answer is 13/15
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