Subtract 7/27 from 42/20, Solve 2 2/20

Subtract 7/27 from 42/20

1^st number: 2 2/20, 2^nd number: 7/27

42/20 - 7/27 is 497/270.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540

Next, find the equivalent fraction of both fractional numbers with denominator 540
For the 1st fraction, since 20 × 27 = 540,
42/20 = 42 × 27/20 × 27 = 1134/540
Likewise, for the 2nd fraction, since 27 × 20 = 540,
7/27 = 7 × 20/27 × 20 = 140/540
Subtract the two like fractions:
1134/540 - 140/540 = 1134 - 140/540 = 994/540
After reducing the fraction, the answer is 497/270
In mixed form: 1227/270

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