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

Subtract 5/80 from 6/21

6/21 - 5/80 is 25/112.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 21 × 80 = 1680,
6/21 = 6 × 80/21 × 80 = 480/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680
Subtract the two like fractions:
480/1680 - 105/1680 = 480 - 105/1680 = 375/1680
After reducing the fraction, the answer is 25/112

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