Solutions by everydaycalculation.com

45 - 18 is 2740.

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

LCM of 5 and 8 is**40**

Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,

45 = 4 × 85 × 8 = 3240 - Likewise, for the 2nd fraction, since 8 × 5 = 40,

18 = 1 × 58 × 5 = 540 - Subtract the two like fractions:

3240 - 540 = 32 - 540 = 2740

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