Subtract 32/42 from 30/10, Solve 3 0/10

Subtract 32/42 from 30/10

1^st number: 3 0/10, 2^nd number: 32/42

30/10 - 32/42 is 47/21.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
30/10 = 30 × 21/10 × 21 = 630/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
32/42 = 32 × 5/42 × 5 = 160/210
Subtract the two like fractions:
630/210 - 160/210 = 630 - 160/210 = 470/210
After reducing the fraction, the answer is 47/21
In mixed form: 25/21

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