Subtract 1/80 from 21/24, Solve 21/24

Subtract 1/80 from 21/24

21/24 - 1/80 is 69/80.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 24 × 10 = 240,
21/24 = 21 × 10/24 × 10 = 210/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
1/80 = 1 × 3/80 × 3 = 3/240
Subtract the two like fractions:
210/240 - 3/240 = 210 - 3/240 = 207/240
After reducing the fraction, the answer is 69/80

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