Subtract 5/7 from 42/2, Solve 21 0/2

Subtract 5/7 from 42/2

1^st number: 21 0/2, 2^nd number: 5/7

42/2 - 5/7 is 142/7.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14

Next, find the equivalent fraction of both fractional numbers with denominator 14
For the 1st fraction, since 2 × 7 = 14,
42/2 = 42 × 7/2 × 7 = 294/14
Likewise, for the 2nd fraction, since 7 × 2 = 14,
5/7 = 5 × 2/7 × 2 = 10/14
Subtract the two like fractions:
294/14 - 10/14 = 294 - 10/14 = 284/14
After reducing the fraction, the answer is 142/7
In mixed form: 202/7

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