Subtract 10/84 from 30/10, Solve 3 0/10

Subtract 10/84 from 30/10

1^st number: 3 0/10, 2^nd number: 10/84

30/10 - 10/84 is 121/42.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 10 × 42 = 420,
30/10 = 30 × 42/10 × 42 = 1260/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420
Subtract the two like fractions:
1260/420 - 50/420 = 1260 - 50/420 = 1210/420
After reducing the fraction, the answer is 121/42
In mixed form: 237/42

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