Subtract 21/80 from 30/6, Solve 5 0/6

Subtract 21/80 from 30/6

1^st number: 5 0/6, 2^nd number: 21/80

30/6 - 21/80 is 379/80.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 6 × 40 = 240,
30/6 = 30 × 40/6 × 40 = 1200/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
21/80 = 21 × 3/80 × 3 = 63/240
Subtract the two like fractions:
1200/240 - 63/240 = 1200 - 63/240 = 1137/240
After reducing the fraction, the answer is 379/80
In mixed form: 459/80

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