Subtract 10/32 from 30/21, Solve 1 9/21

Subtract 10/32 from 30/21

1^st number: 1 9/21, 2^nd number: 10/32

30/21 - 10/32 is 125/112.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
30/21 = 30 × 32/21 × 32 = 960/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
10/32 = 10 × 21/32 × 21 = 210/672
Subtract the two like fractions:
960/672 - 210/672 = 960 - 210/672 = 750/672
After reducing the fraction, the answer is 125/112
In mixed form: 113/112

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