Subtract 4/40 from 72/27, Solve 2 18/27

Subtract 4/40 from 72/27

1^st number: 2 18/27, 2^nd number: 4/40

72/27 - 4/40 is 77/30.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080

Next, find the equivalent fraction of both fractional numbers with denominator 1080
For the 1st fraction, since 27 × 40 = 1080,
72/27 = 72 × 40/27 × 40 = 2880/1080
Likewise, for the 2nd fraction, since 40 × 27 = 1080,
4/40 = 4 × 27/40 × 27 = 108/1080
Subtract the two like fractions:
2880/1080 - 108/1080 = 2880 - 108/1080 = 2772/1080
After reducing the fraction, the answer is 77/30
In mixed form: 217/30

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