Subtract 30/84 from 25/2, Solve 12 1/2

Subtract 30/84 from 25/2

1^st number: 12 1/2, 2^nd number: 30/84

25/2 - 30/84 is 85/7.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 84 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 2 × 42 = 84,
25/2 = 25 × 42/2 × 42 = 1050/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
30/84 = 30 × 1/84 × 1 = 30/84
Subtract the two like fractions:
1050/84 - 30/84 = 1050 - 30/84 = 1020/84
After reducing the fraction, the answer is 85/7
In mixed form: 121/7

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