Subtract 30/28 from 18/10, Solve 1 8/10

Subtract 30/28 from 18/10

1^st number: 1 8/10, 2^nd number: 1 2/28

18/10 - 30/28 is 51/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 28 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 10 × 14 = 140,
18/10 = 18 × 14/10 × 14 = 252/140
Likewise, for the 2nd fraction, since 28 × 5 = 140,
30/28 = 30 × 5/28 × 5 = 150/140
Subtract the two like fractions:
252/140 - 150/140 = 252 - 150/140 = 102/140
After reducing the fraction, the answer is 51/70

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