Subtract 21/63 from 2/10
2/10 - 21/63 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 10 × 63 = 630,
2/10 = 2 × 63/10 × 63 = 126/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Subtract the two like fractions:
126/630 - 210/630 = 126 - 210/630 = -84/630 - After reducing the fraction, the answer is -2/15
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