Subtract 21/14 from 80/4, Solve 20 0/4

Subtract 21/14 from 80/4

1^st number: 20 0/4, 2^nd number: 1 7/14

80/4 - 21/14 is 37/2.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 14 is 28

Next, find the equivalent fraction of both fractional numbers with denominator 28
For the 1st fraction, since 4 × 7 = 28,
80/4 = 80 × 7/4 × 7 = 560/28
Likewise, for the 2nd fraction, since 14 × 2 = 28,
21/14 = 21 × 2/14 × 2 = 42/28
Subtract the two like fractions:
560/28 - 42/28 = 560 - 42/28 = 518/28
After reducing the fraction, the answer is 37/2
In mixed form: 181/2

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