Subtract 48/42 from 21/8, Solve 2 5/8

Subtract 48/42 from 21/8

1^st number: 2 5/8, 2^nd number: 1 6/42

21/8 - 48/42 is 83/56.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
21/8 = 21 × 21/8 × 21 = 441/168
Likewise, for the 2nd fraction, since 42 × 4 = 168,
48/42 = 48 × 4/42 × 4 = 192/168
Subtract the two like fractions:
441/168 - 192/168 = 441 - 192/168 = 249/168
After reducing the fraction, the answer is 83/56
In mixed form: 127/56

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