Subtract 28/80 from 56/36, Solve 1 20/36

Subtract 28/80 from 56/36

1^st number: 1 20/36, 2^nd number: 28/80

56/36 - 28/80 is 217/180.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 36 × 20 = 720,
56/36 = 56 × 20/36 × 20 = 1120/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720
Subtract the two like fractions:
1120/720 - 252/720 = 1120 - 252/720 = 868/720
After reducing the fraction, the answer is 217/180
In mixed form: 137/180

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