Subtract 32/10 from 1/21, Solve 1/21

Subtract 32/10 from 1/21

1^st number: 1/21, 2^nd number: 3 2/10

1/21 - 32/10 is -331/105.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
1/21 = 1 × 10/21 × 10 = 10/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
32/10 = 32 × 21/10 × 21 = 672/210
Subtract the two like fractions:
10/210 - 672/210 = 10 - 672/210 = -662/210
After reducing the fraction, the answer is -331/105

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