Subtract 21/80 from 36/27, Solve 1 9/27

Subtract 21/80 from 36/27

1^st number: 1 9/27, 2^nd number: 21/80

36/27 - 21/80 is 257/240.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 80 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 27 × 80 = 2160,
36/27 = 36 × 80/27 × 80 = 2880/2160
Likewise, for the 2nd fraction, since 80 × 27 = 2160,
21/80 = 21 × 27/80 × 27 = 567/2160
Subtract the two like fractions:
2880/2160 - 567/2160 = 2880 - 567/2160 = 2313/2160
After reducing the fraction, the answer is 257/240
In mixed form: 117/240

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