Subtract 21/63 from 90/30
1st number: 3 0/30, 2nd number: 21/63
90/30 - 21/63 is 8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
90/30 = 90 × 21/30 × 21 = 1890/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Subtract the two like fractions:
1890/630 - 210/630 = 1890 - 210/630 = 1680/630 - After reducing the fraction, the answer is 8/3
- In mixed form: 22/3
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