Subtract 10/9 from 30/28, Solve 1 2/28

Subtract 10/9 from 30/28

1^st number: 1 2/28, 2^nd number: 1 1/9

30/28 - 10/9 is -5/126.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 28 × 9 = 252,
30/28 = 30 × 9/28 × 9 = 270/252
Likewise, for the 2nd fraction, since 9 × 28 = 252,
10/9 = 10 × 28/9 × 28 = 280/252
Subtract the two like fractions:
270/252 - 280/252 = 270 - 280/252 = -10/252
After reducing the fraction, the answer is -5/126

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