Solutions by everydaycalculation.com

1^{st} number: 3 1/2, 2^{nd} number: 1/8

72 - 18 is 278.

- Find the least common denominator or LCM of the two denominators:

LCM of 2 and 8 is**8**

Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 2 × 4 = 8,

72 = 7 × 42 × 4 = 288 - Likewise, for the 2nd fraction, since 8 × 1 = 8,

18 = 1 × 18 × 1 = 18 - Subtract the two like fractions:

288 - 18 = 28 - 18 = 278 - In mixed form: 338

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