Subtract 7/80 from 42/27, Solve 1 15/27

Subtract 7/80 from 42/27

1^st number: 1 15/27, 2^nd number: 7/80

42/27 - 7/80 is 1057/720.

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,
42/27 = 42 × 80/27 × 80 = 3360/2160
Likewise, for the 2nd fraction, since 80 × 27 = 2160,
7/80 = 7 × 27/80 × 27 = 189/2160
Subtract the two like fractions:
3360/2160 - 189/2160 = 3360 - 189/2160 = 3171/2160
After reducing the fraction, the answer is 1057/720
In mixed form: 1337/720

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