Subtract 7/18 from 28/8, Solve 3 4/8

Subtract 7/18 from 28/8

1^st number: 3 4/8, 2^nd number: 7/18

28/8 - 7/18 is 28/9.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 8 × 9 = 72,
28/8 = 28 × 9/8 × 9 = 252/72
Likewise, for the 2nd fraction, since 18 × 4 = 72,
7/18 = 7 × 4/18 × 4 = 28/72
Subtract the two like fractions:
252/72 - 28/72 = 252 - 28/72 = 224/72
After reducing the fraction, the answer is 28/9
In mixed form: 31/9

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