Subtract 25/84 from 10/8, Solve 1 2/8

Subtract 25/84 from 10/8

1^st number: 1 2/8, 2^nd number: 25/84

10/8 - 25/84 is 20/21.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168
Likewise, for the 2nd fraction, since 84 × 2 = 168,
25/84 = 25 × 2/84 × 2 = 50/168
Subtract the two like fractions:
210/168 - 50/168 = 210 - 50/168 = 160/168
After reducing the fraction, the answer is 20/21

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