Subtract 2/7 from 42/8, Solve 5 2/8

Subtract 2/7 from 42/8

1^st number: 5 2/8, 2^nd number: 2/7

42/8 - 2/7 is 139/28.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56

Next, find the equivalent fraction of both fractional numbers with denominator 56
For the 1st fraction, since 8 × 7 = 56,
42/8 = 42 × 7/8 × 7 = 294/56
Likewise, for the 2nd fraction, since 7 × 8 = 56,
2/7 = 2 × 8/7 × 8 = 16/56
Subtract the two like fractions:
294/56 - 16/56 = 294 - 16/56 = 278/56
After reducing the fraction, the answer is 139/28
In mixed form: 427/28

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