Subtract 21/10 from 45/63
1st number: 45/63, 2nd number: 2 1/10
45/63 - 21/10 is -97/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
45/63 = 45 × 10/63 × 10 = 450/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
21/10 = 21 × 63/10 × 63 = 1323/630 - Subtract the two like fractions:
450/630 - 1323/630 = 450 - 1323/630 = -873/630 - After reducing the fraction, the answer is -97/70
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