Subtract 9/84 from 15/8, Solve 1 7/8

Subtract 9/84 from 15/8

1^st number: 1 7/8, 2^nd number: 9/84

15/8 - 9/84 is 99/56.

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,
15/8 = 15 × 21/8 × 21 = 315/168
Likewise, for the 2nd fraction, since 84 × 2 = 168,
9/84 = 9 × 2/84 × 2 = 18/168
Subtract the two like fractions:
315/168 - 18/168 = 315 - 18/168 = 297/168
After reducing the fraction, the answer is 99/56
In mixed form: 143/56

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